# What Can We Claim About Microplastics In Supplements?

> Learn which microplastics claims are legal for U.S. supplement brands. The Wellness Quality Institute helps you stay compliant and credible.

**Published:** 2026-11-02 | **Updated:** 2026-11-02 | **Author:** mihir
**URL:** https://www.wellnessqualityinstitute.com/articles/microplastics-supplement-claims-guide
**Type:** post

**Categories:** Certification

![What Can We Claim About Microplastics In Supplements?](https://wellnessquality.sites.aigrowthagent.co/wp-content/uploads/sites/93/2026/11/1793540487047-4a63c724da69-1024x572.webp)

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## Content

*Written by: Scott Steveson, Specialist, Wellness Quality Institute*

## Key Takeaways

- U.S. supplement brands face no federal microplastics standard. Each company carries the full substantiation burden and faces class-action and regulatory risk for unsubstantiated claims.
- Peer-reviewed studies confirm microplastics in omega-3, spirulina, fiber, and protein supplements. Neither FDA nor EFSA has set limits or approved any detox, removal, or absence claims.
- Absolute claims such as “microplastic-free” or “plastic-free” cannot be substantiated. Validated lab methods miss particles below 20–50 µm and cannot screen every polymer or production lot.
- Only claims tied to reviewed laboratory data, kept within tested scope, and free of health-outcome language are defensible under current rules.
- The Wellness Quality Institute independently reviews existing third-party lab data against California-aligned criteria and issues scope-locked, registry-listed claim language that brands can publish and defend.

[Learn How The Wellness Quality Institute Turns Lab Data Into Defensible Claims](https://www.wellnessqualityinstitute.com/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent)

## Quick Overview: How The Four-Lens Claims Framework Works

Peer-reviewed studies published between 2023 and 2026, including [Kim et al. (Foods, 2024) on omega-3 oil supplements, Tutaroğlu et al. (Environ Sci Pollut Res, 2024) on packaged spirulina, and Panneerselvan et al. (Environmental Pollution, 2024) on dietary fiber supplements](https://www.sciencedirect.com/science/article/pii/S0269749123022352), have detected microplastics in omega-3 oils, spirulina products, and fiber supplements. Related research has also found microplastic contamination in commonly consumed protein products. [Neither the U.S. Food and Drug Administration (FDA) nor the European Food Safety Authority (EFSA) has established a specific regulatory limit for microplastics in dietary supplements](https://efsa.europa.eu/en/topics/microplastics-and-nanoplastics-food), and [neither agency has authorized any claim that a supplement removes, detoxifies, or protects against microplastics](https://efsa.europa.eu/en/topics/topic/food-supplements). Regulatory silence does not create freedom to claim anything. It places the entire substantiation burden on the brand.

This guide evaluates every potential claim through four lenses.

- **Evidence Quality:** The claim ties to a reviewed dataset from a qualified independent laboratory.
- **Claim Scope:** The claim stays within the tested product, particle-size range, polymer panel, and production period.
- **Regulatory Alignment:** The claim avoids health outcomes and absolute absence language.
- **Independent Review:** A third party with no stake in the result has reviewed the data against a published standard.

A claim that passes all four lenses is defensible. A claim that fails any one of them carries legal and reputational exposure. The science section below establishes evidence quality. The FDA and EFSA section covers regulatory alignment. The claims taxonomy tests claim scope. The verification section explains independent review.

## What The Science Currently Shows About Microplastics In Supplements

Microplastics have been detected across multiple supplement categories in peer-reviewed research. A 2024 study by Kim et al., published in *Foods* (13(10):1434), tested 14 raw omega-3 oils and 21 capsule products from the Korean market using µ-Raman spectroscopy with a lower size limit of 5 µm. Raw oils contained 1.2 to 2.2 particles per gram; capsule oils contained 3.5 to 10.6 particles per gram. Capsule oils therefore carried roughly three to five times more particles. Polypropylene and PET together made up 83–95% of identified particles, and the authors identified manufacturing and packaging, not the raw material, as the main contamination source.

![Fragments of plastic suspended in blue water below the surface.](https://cdn.aigrowthmarketer.co/1784829388732-c6255482b477.webp)**Plastic doesn't disappear — it fragments. These secondary microplastics are the breakdown products of everyday objects, and independent research now detects them across the water supply. Detection, though, establishes presence, not absence.**

A critical detail for any brand citing a “clean” omega-3 result is particle size. In Kim et al., 60–73% of detected particles fell in the 5–20 µm size range. A laboratory method with a 20 µm lower size limit would have missed most of them. A brand citing a result from a coarser method may be citing a result that structurally could not have found the particles the literature reports.

A 2024 study by Panneerselvan et al., published in *Environmental Pollution*, detected microplastics in all nine Australian fiber supplement products tested. Particles ranged from 120 µm to 3 mm, with polyamide (nylon) as the dominant polymer. Estimated average intake from supplements alone was 5.89 particles per day.

A 2024 study by Tutaroğlu et al., published in *Environmental Science and Pollution Research*, found suspected microplastic particles in 26 of 29 spirulina products tested. The products averaged 13.77 particles per 100 g dry weight, and polypropylene was the leading identified polymer at 31.6%. In Tutaroğlu et al., the team visually identified 251 suspected particles. µ-Raman analysis confirmed 73% as plastic. Visual suspects are not automatically confirmed polymers, so visual screening counts cannot become definitive microplastic totals unless the method and confirmation rate are stated.

[A 2026 narrative review by Kadac-Czapska et al., published in *Toxics* (14(6):514), analyzed 129 scientific publications](https://mdpi.com/2305-6304/14/6/514). The review identified mixers, capsule-filling machines, tablet presses, plastic tubing, filters, and packaging as the primary release points for microplastic contamination in supplements. [The authors also state that there are currently no legal requirements for monitoring microplastics in health-oriented foods](https://mdpi.com/2305-6304/14/6/514).

The [WHO’s 2019 assessment of microplastics in drinking water](https://www.who.int/publications/i/item/9789241516198) found no indication of health risk at current levels on limited evidence, while stressing that more research is urgently needed. The same measured hedge applies to supplements. Detection establishes presence. It does not establish harm. One important distinction belongs in every article on this topic. The evidence base for plastic chemical additives such as phthalates and bisphenols as endocrine disruptors is considerably more mature than the evidence for microplastic particles themselves. These are separate questions, and the confidence of the first cannot support claims about the second.

## What FDA And EFSA Say About Microplastics In Supplements

This emerging evidence base helps explain why regulators have stayed cautious and specific rules remain limited. The FDA’s stated position is that [current scientific evidence does not demonstrate that levels of microplastics or nanoplastics detected in foods pose a risk to human health](https://iom3.org/resource/piece-by-piece.html), and the agency continues to monitor the research. [As of October 2026, FDA’s guidance catalog for food and dietary supplements contains no guidance document addressing microplastics](https://fda.gov/food/guidance-regulation-food-and-dietary-supplements/guidance-documents-regulatory-information-topic-food-and-dietary-supplements), and no action level or regulatory limit for microplastics in supplements exists.

Under the Dietary Supplement Health and Education Act (DSHEA), [FDA does not approve dietary supplements before marketing](https://www.fda.gov/food/information-consumers-using-dietary-supplements/questions-and-answers-dietary-supplements). A firm making a structure or function claim must have substantiation that the claim is truthful and not misleading, [must notify FDA within 30 days of first marketing](https://ecfr.gov/current/title-21/section-101.93), and must carry the statutory disclaimer. Under [21 CFR 101.93](https://www.ecfr.gov/current/title-21/section-101.93), [a product represented for the treatment, prevention, or cure of a disease meets the definition of a drug](https://ecfr.gov/current/title-21/section-101.93) and is regulated accordingly.

A “free-from” representation such as “microplastic-free” or “plastic-free” receives no exception from the general truthfulness requirement. [The FDA’s gluten-free standard (21 CFR 101.91) illustrates how the agency approaches absolute-type “free” claims. It requires a quantitative threshold of 20 ppm](https://ecfr.gov/current/title-21/chapter-I/subchapter-B/part-101/subpart-F) and deems a product misbranded if it bears the claim without meeting it. No equivalent threshold exists for microplastics. A brand making such a claim therefore has no regulatory floor to stand on and must substantiate it entirely on its own evidence.

[EFSA has not completed a full risk assessment of microplastics and nanoplastics in food](https://efsa.europa.eu/en/topics/microplastics-and-nanoplastics-food) and therefore cannot conclude on potential health effects. [A scientific opinion requested by the European Parliament is scheduled to be finalized by the end of 2027](https://efsa.europa.eu/en/topics/microplastics-and-nanoplastics-food). EFSA has not set a supplement-specific threshold and has not authorized any claim that a supplement removes or protects against microplastics.

The practical implication for U.S. brands is that no federal standard defines what a microplastics claim in a supplement means. A brand making one must substantiate it entirely on its own evidence, which is why independent review matters.

The Wellness Quality Institute’s review criteria are aligned with the California State Water Board’s drinking-water microplastics reference framework, which is the most stringent public reference reasonably applicable to testing today. California has not created, approved, authorized, or endorsed the Wellness Quality Institute or its standard. Alignment serves as a technical reference point, not a geographic boundary or a government certification.

## Claims You Can Make About Microplastics In Supplements And Claims You Cannot

This framework organizes supplement microplastics claims into three categories. Every brand should evaluate its existing copy and planned language against this taxonomy before publishing.

### Supported Claims

- “Microplastics have been detected in some dietary supplements” is supported by peer-reviewed studies and must be attributed to the specific study, not to the brand.
- “Our product has been tested for microplastics by an independent laboratory” is supported only if the brand holds a laboratory report and can describe the method, tested particle-size range, and polymer panel.
- “Our dataset has been reviewed and accepted under the Wellness Quality Institute’s Plastic-Free Pathway Verification standard” is supported only for products that received a Standard Met outcome, within the registered Verification Scope, with a registry ID.
- “We are on a verified pathway toward plastic-free standards” is supported only with the Wellness Quality Institute verification and only using approved claim language.

### Unsupported Claims

- “Our supplement is microplastic-free” cannot be substantiated because no laboratory can confirm complete absence across every particle size, polymer type, and production lot.
- “Our product is plastic-free” conflicts with the California definition, which reaches down to 1 nanometer while the best validated methods begin at 20 or 50 micrometers.
- “None detected, therefore none present” overreaches. “None detected” means none found above the instrument’s detection floor, for the polymers screened, in the lot tested. It is a bounded statement.

### Prohibited Claims

- “Detoxifies microplastics” or “removes microplastics from the body” are prohibited because no supplement has been shown to remove microplastics from the human body. These claims carry FDA enforcement risk, FTC substantiation exposure, and active class-action litigation risk.
- “Flushes microplastics out” is unsupported for the same reasons and is likely to draw regulatory scrutiny.
- “Microplastic-free,” “plastic-free,” “zero plastic,” and “100% plastic-free” are absolute absence claims that no laboratory can substantiate.
- “Certified plastic-free” or “certified microplastic-free” implies a settled, guaranteed state that is not scientifically available.
- Any health-outcome claim, such as “protects against microplastics” or “reduces microplastic harm,” is not supported by current evidence and is subject to drug-claim rules under DSHEA.

[The FTC’s substantiation standard requires that competent and reliable scientific evidence be possessed and relied upon before a health-benefit representation is made](https://ftc.gov/news-events/news/press-releases/2026/06/ftc-files-contempt-motion-against-amare-global-three-individuals-over-unsubstantiated-health-claims). [A June 2026 FTC contempt motion against Amare Global illustrates the agency’s willingness to pursue supplement brands for unsubstantiated health claims](https://ftc.gov/news-events/news/press-releases/2026/06/ftc-files-contempt-motion-against-amare-global-three-individuals-over-unsubstantiated-health-claims), including claims described as “science backed” or “clinically proven” without adequate evidence. Microplastics claims face the same standard.

[See How Independent Review Supports Compliant Microplastics Claims](https://www.wellnessqualityinstitute.com/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent)

## Why “Detox” And “Removal” Claims Are Unsupported

Consumer searches for “Is there a supplement to reduce microplastics?” and “Can you flush microplastics out of your body?” reflect genuine concern. The honest answer to both is no. No peer-reviewed evidence demonstrates that any dietary supplement removes microplastics from the human body.

[University of New Mexico toxicology professor Matthew Campen, whose lab documented microplastics in human brain tissue](https://eenews.net/articles/rfk-jr-and-maha-influencers-take-on-microplastics), [stated: “As far as I’m concerned, there’s no real scientific basis for any solution talking about clearing these from our body. I urge people to be skeptical, but maybe not cynical. We do need to sort this out.”](https://eenews.net/articles/rfk-jr-and-maha-influencers-take-on-microplastics) [Campen added that he has not seen peer-reviewed scientific literature showing that any marketed product effectively removes microplastics from the human body](https://eenews.net/articles/rfk-jr-and-maha-influencers-take-on-microplastics).

[Independent toxicologist Alexandra Muñoz](https://eenews.net/articles/rfk-jr-and-maha-influencers-take-on-microplastics) [said: “I’m highly skeptical of any supplement being able to do that, or of anyone even being able to effectively measure if they’ve done that. The challenges of measuring microplastics are so large right now that even measuring if you’ve done that would require a lot of expertise that I don’t think most of the people claiming to have made these [detox] products actually have.”](https://eenews.net/articles/rfk-jr-and-maha-influencers-take-on-microplastics)

Binding agents such as fiber may bind certain substances in the gut, and [a 2026 preclinical study published in *Nature Nanotechnology* tested an alginate-chitin framework that reduced microplastic signal in mouse colons under experimental conditions](https://scienmag.com/micro-nanofibre-framework-traps-and-clears-gastrointestinal-microplastics). [The researchers stated explicitly that the mouse studies must be replicated in larger animal models and eventually in clinical trials before any human claims can be made](https://scienmag.com/micro-nanofibre-framework-traps-and-clears-gastrointestinal-microplastics). Mouse results cannot support a supplement claim that a product detoxes or removes microplastics from humans.

The distinction that matters for claim compliance is clear. A claim about a product’s own microplastic content, meaning what the laboratory found in the product, can be tested and independently reviewed. A claim about the product’s effect on microplastics already in the body cannot currently be substantiated. These are different claims, and only the first is available to supplement brands today.

## The Evidence Gap: Why “None Detected” Is Not “None Present”

Three technical limits make absolute absence claims indefensible in the supplement matrix. Every brand with laboratory data should understand them before publishing any microplastics-related copy.

### Particle-Size Limits

No method detects every particle size. California’s Raman spectroscopy method (SWB-MP2-rev1) is validated for particles greater than 20 µm. Its infrared method (SWB-MP1-rev1) is validated for particles greater than 50 µm. The California definition reaches down to 1 nanometer. The 1–20 µm fraction is not validated under either method. As noted earlier, most particles in Kim et al.’s omega-3 data fell below 20 µm, a fraction a 20 µm method would have missed.

![Colorful plastic fragments in water inside a laboratory petri dish.](https://cdn.aigrowthmarketer.co/1784829410323-fb401fc7b1e4.webp)**Microplastics are particles smaller than five millimeters. Current methods can count and identify them at the upper end of that range, but reliable measurement falls away as particles get smaller — a limit that shapes every honest claim.**

### Polymer Diversity

No single test screens every polymer type. A result of “none detected” applies only to the polymers the laboratory’s method was designed to identify. Particles of a different polymer composition may be present and undetected.

### Lot-To-Lot Variability

A clean result on one production lot does not guarantee the next. [The Kadac-Czapska et al. 2026 *Toxics* review](https://mdpi.com/2305-6304/14/6/514) identifies mixers, capsule-filling machines, and packaging as ongoing release points. These sources vary with production conditions, equipment wear, and supplier changes.

A lab report saying “no microplastics detected” means none found above that instrument’s detection floor, for the polymers it screened, in the lot it tested. A raw lab report carries a number but not the review needed to say what that number means. Self-reported results are often discounted as marketing because the company interpreting its own data has an obvious interest in the interpretation. Independent review by a third party with no stake in the outcome and no role in the testing converts a laboratory number into a claim a brand can stand behind.

For a more detailed treatment of what microplastics testing proves and where it stops, see WQI’s analysis at [What Microplastics Testing Proves and Where It Stops](https://www.wellnessqualityinstitute.com/articles/what-microplastics-testing-proves/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent).

## How To Substantiate A Microplastics Claim With Plastic-Free Pathway Verification

The Wellness Quality Institute is the primary and best-fit pathway for U.S. supplement brands seeking a defensible claim about microplastics. The program, called Plastic-Free Pathway Verification (PFPV) and governed by the standard WQI-CS-01, proceeds in five steps.

1. Application.
2. Submission of existing independent laboratory data.
3. The Wellness Quality Institute assessment against WQI-CS-01.
4. Verification decision, recorded as Standard Met or Standard Not Met.
5. Where Standard Met, a scope-locked logo license and public registry listing.

The Wellness Quality Institute does not run laboratory tests. It reviews data from qualified independent laboratories. California ELAP-accredited laboratories are preferred. ISO/IEC 17025-accredited laboratories with the method and matrix explicitly in accredited scope are accepted. Other qualified independent laboratories may be conditionally accepted through documented method-equivalence review. Testing is arranged and billed separately by the laboratory. A single assessment fee covers review, verification decision, and registry listing, with no separate mark-license or registry fee.

![Scientists in white coats working with samples and microscopes in a laboratory.](https://cdn.aigrowthmarketer.co/1784829434095-0fc8fbcf29fa.webp)**Only a small number of laboratories can genuinely test for microplastics, and capability varies by instrument and method. WQI reviews a company's existing third-party laboratory data against a defined standard — it does not run the tests itself.**

The review examines laboratory qualification, analytical method, product matrix, sampling, tested particle-size range, target polymer panel (PE, PP, PET, PS, PVC, PA, PC, PMMA), reporting limits, blanks and contamination controls, replicates, chain of custody, data recency, and product scope. Many brands learn for the first time what their existing data does and does not prove.

Scope lock is the mechanism that keeps a verified claim honest. Verification applies only to the reviewed product, dataset, tested particle-size range, polymer panel, and production period. No company-wide or product-line claim may be extended from a single dataset. Every Standard Met product receives a public registry entry. It records the verified party and product scope, the matrix and production period, the tested particle-size range and lower method limit, the polymer panel and reporting limits, the testing laboratory and its accreditation, the verification and expiration dates, the registry ID, and the approved result statement. Anyone can check the claim.

A Standard Not Met outcome is private. It carries no public claim, logo rights, or registry listing. The outcome often reflects a testing limitation rather than a product defect, and the company may resubmit with updated information. Participating therefore carries no public downside risk.

The approved mark is “WQI Plastic-Free Pathway Verified.” The word “pathway” is never dropped. The mark describes a verified pathway toward plastic-free standards, not a plastic-free product. It may not be presented as a certification, a California approval, or a government or health certification.

>
*WQI Plastic-Free Pathway Verification does not certify that a product contains zero plastic, microplastics or nanoplastics. It shows that the company is on a verified pathway toward plastic-free standards. Verification applies only to the reviewed products, submitted datasets, tested ranges, polymer panels, production or sampling periods, and supporting controls. The Wellness Quality Institute verification is not a California approval, government certification, or health or safety certification.*

For the minimum data requirements a brand’s laboratory report must meet before submission, see [Minimum Requirements For Microplastics Claims](https://www.wellnessqualityinstitute.com/articles/minimum-requirements-microplastics-claims/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent).

## Common Mistakes And Misinterpretations In Microplastics Claims

The following errors appear consistently in supplement brand marketing and regulatory review. In many cases the brand holds real data but has no independent review explaining what the data actually supports.

- **Treating “none detected” as “none present.”** The detection floor, not the product, defines the result. A result bounded by a 50 µm method says nothing about particles below 50 µm.
- **Extending a single product’s test result across a product line.** Scope lock exists for this reason. One SKU’s result cannot support a brand-level or line-level claim.
- **Using “microplastic-free” or “plastic-free” as marketing shorthand.** These are absolute absence claims. No laboratory can substantiate them, and they are precisely the claims drawing class-action attention in the supplement category.
- **Borrowing confidence from plastic additive evidence to support microplastic particle claims.** The evidence on phthalates and bisphenols as endocrine disruptors is mature. The evidence on microplastic particles themselves is far less settled. These are different questions, and conflating them is the most common overreach in this field.
- **Making detox or removal claims without evidence.** No peer-reviewed human study supports the claim that any supplement removes microplastics from the body. These claims risk FDA enforcement, FTC action, and private litigation.

For a claim-by-claim analysis of what supplement and product data can and cannot support, see [Microplastics Claim Verification: A Claim-By-Claim Guide](https://www.wellnessqualityinstitute.com/articles/microplastics-claim-verification-data/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent) and [Microplastics Packaging Claims: A US Brand Compliance Guide](https://www.wellnessqualityinstitute.com/articles/retail-packaging-microplastics-claim-requirements/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent).

[Work With The Wellness Quality Institute On Clear, Defensible Claim Language](https://www.wellnessqualityinstitute.com/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent)

## Conclusion And Practical Next Steps For Brands

The framework is straightforward even when the science is complex. Supported claims rest on reviewed evidence and stay within the tested scope. Unsupported claims outrun the science. Prohibited claims such as absolute absence, detox, removal, and health outcomes carry legal and reputational risk that genuine laboratory data cannot fix when the claim itself is indefensible.

The Wellness Quality Institute is the best verification pathway for supplement brands seeking to make defensible claims about microplastics. It independently reviews existing laboratory data against published criteria aligned with California’s drinking-water microplastics framework, issues scope-locked approved claim language, and lists verified products on a public registry.

Practical next steps for any brand with existing microplastics data are clear. Audit that data against the four-lens framework introduced above. Confirm whether the laboratory’s method, accreditation, and detection range are adequate for the supplement matrix. Consider independent review before publishing any microplastics-related claim so the claim can withstand retailer diligence, legal review, and class-action scrutiny.

[See How WQI Plastic-Free Pathway Verification Supports Your Next Label Or Launch](https://www.wellnessqualityinstitute.com/?utm_term=microplastics-supplement-claims-guide&utm_campaign=ai_growth_agent)

## Frequently Asked Questions

### Can We Say Our Supplement Is Microplastic-Free?

No. No laboratory can confirm complete absence of microplastics across every particle size, polymer type, and production lot. The best validated analytical methods begin at 20 or 50 micrometers, while the regulatory definition of microplastics reaches down to 1 nanometer, a gap thousands of times larger than what any current method can reliably measure. A claim of “microplastic-free” is an absolute absence claim that the science cannot currently carry and is precisely the type of claim drawing class-action litigation in the supplement category. A defensible alternative is a claim tied to reviewed evidence and bounded by the tested scope.

### Can We Say Our Product Has Been Tested For Microplastics?

Yes, with conditions. A brand may state that its product has been tested for microplastics by an independent laboratory if it holds a laboratory report and can describe the method used, the tested particle-size range, and the polymer panel screened. The claim must not imply that testing established absence, and it must not extend to particle sizes or polymer types outside the method’s validated scope. A statement such as “tested for microplastics using µ-Raman spectroscopy for particles above 20 µm, screening for PE, PP, PET, PS, PVC, PA, PC, and PMMA” is more defensible than an unqualified “tested for microplastics” because it states what the test actually covered.

### What Does “None Detected” Mean On A Lab Report?

It means none were found above that instrument’s detection floor, for the polymers the method was designed to screen, in the specific lot tested. As the claims taxonomy above notes, “none detected” is a bounded statement, one method, one polymer panel, one lot. Independent review tells a brand what that bounded statement actually supports as a market claim.

### Is There A Supplement That Removes Microplastics From The Body?

No peer-reviewed evidence supports this claim for any currently marketed supplement. Researchers who study microplastics in human tissue have stated publicly that they have not seen scientific literature showing any marketed product effectively removes microplastics from the body. Fiber may speed gastrointestinal transit and could affect particles that have not yet been absorbed, but it has no known effect on particles that have already crossed into blood or tissue. Preclinical research in mice has explored binding agents, but mouse results cannot support human claims. Any supplement marketed as removing, flushing, or detoxifying microplastics from the body is making a claim that is not supported by current evidence and that carries FDA enforcement and FTC substantiation risk.

### What Do FDA And EFSA Say About Microplastics In Supplements?

Neither agency has established a specific regulatory limit for microplastics in dietary supplements. The FDA’s position is that current scientific evidence does not demonstrate that levels of microplastics or nanoplastics detected in foods pose a risk to human health, while the agency continues to monitor the research. EFSA has not completed a full risk assessment and has scheduled its scientific opinion for finalization by the end of 2027. Neither agency has authorized any claim that a supplement removes, detoxifies, or protects against microplastics. Under DSHEA, the substantiation burden for any supplement claim, including a microplastics-related one, rests entirely with the brand.

### What Is The Wellness Quality Institute Plastic-Free Pathway Verification?

Plastic-Free Pathway Verification is an independent review of a brand’s existing third-party laboratory data against published criteria aligned with the California State Water Board’s drinking-water microplastics reference framework. The review examines laboratory qualification, analytical method, product matrix, sampling, tested particle-size range, polymer panel, reporting limits, contamination controls, chain of custody, and data recency. Where the standard is met, the brand receives a scope-locked verification, a license to use the approved mark “WQI Plastic-Free Pathway Verified,” and a public registry listing that anyone can check. The mark describes a verified pathway toward plastic-free standards, not a plastic-free product. The Wellness Quality Institute verification is not a certification, a California approval, or a government or health certification.

### Does The Wellness Quality Institute Test Products?

No. The Wellness Quality Institute reviews data from qualified independent laboratories. Testing is arranged and billed separately by the laboratory. The Wellness Quality Institute’s role is to assess whether the laboratory’s method, accreditation, contamination controls, and dataset meet the requirements of WQI-CS-01 and to issue approved claim language tied to what the reviewed evidence actually supports. That separation between the testing and the review is the source of the independence that makes the verification credible.

### Is The Wellness Quality Institute Verification A Certification Or A California Approval?

No to both. The Wellness Quality Institute deliberately does not use the word “certification” because certification implies a settled, guaranteed state that a product is free of plastic, and no such guarantee is scientifically available. The Wellness Quality Institute issues a verification of reviewed data and demonstrated progress toward plastic-free standards. California has not created, approved, authorized, or endorsed the Wellness Quality Institute or its standard. The Wellness Quality Institute aligns its criteria with California’s drinking-water microplastics framework because it is the most stringent credible public reference available, not because California authorized the program. A verification is not a California approval, a government certification, or a health or safety certification.

## What to Read Next

- [Microplastics Packaging Claims: A US Brand Compliance Guide](https://www.wellnessqualityinstitute.com/articles/retail-packaging-microplastics-claim-requirements/)
- [Microplastics Claim Verification: A Claim-By-Claim Guide](https://www.wellnessqualityinstitute.com/articles/microplastics-claim-verification-data/)
- [What Microplastics Testing Proves and Where It Stops](https://www.wellnessqualityinstitute.com/articles/what-microplastics-testing-proves/)
- [Microplastics Testing Limits and How to Judge the Evidence](https://www.wellnessqualityinstitute.com/articles/water-quality-month-microplastics/)
- [Microplastics in Water: Health Evidence & Brand Claims](https://www.wellnessqualityinstitute.com/articles/health-effects-microplastics-water/)

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    **Question:**

    - **Name:** Can We Say Our Supplement Is Microplastic-Free?
      **Answer:**

      - **Text:** No. No laboratory can confirm complete absence of microplastics across every particle size, polymer type, and production lot. The best validated analytical methods begin at 20 or 50 micrometers, while the regulatory definition of microplastics reaches down to 1 nanometer, a gap thousands of times larger than what any current method can reliably measure. A claim of microplastic-free is an absolute absence claim that the science cannot currently carry and is precisely the type of claim drawing class-action litigation in the supplement category. A defensible alternative is a claim tied to reviewed evidence and bounded by the tested scope.
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    - **Name:** Can We Say Our Product Has Been Tested For Microplastics?
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      - **Text:** Yes, with conditions. A brand may state that its product has been tested for microplastics by an independent laboratory if it holds a laboratory report and can describe the method used, the tested particle-size range, and the polymer panel screened. The claim must not imply that testing established absence, and it must not extend to particle sizes or polymer types outside the method's validated scope. A statement such as tested for microplastics using µ-Raman spectroscopy for particles above 20 µm, screening for PE, PP, PET, PS, PVC, PA, PC, and PMMA is more defensible than an unqualified tested for microplastics because it states what the test actually covered.
    **Question:**

    - **Name:** What Does None Detected Mean On A Lab Report?
      **Answer:**

      - **Text:** It means none were found above that instrument's detection floor, for the polymers the method was designed to screen, in the specific lot tested. As the claims taxonomy above notes, none detected is a bounded statement, one method, one polymer panel, one lot. Independent review tells a brand what that bounded statement actually supports as a market claim.
    **Question:**

    - **Name:** Is There A Supplement That Removes Microplastics From The Body?
      **Answer:**

      - **Text:** No peer-reviewed evidence supports this claim for any currently marketed supplement. Researchers who study microplastics in human tissue have stated publicly that they have not seen scientific literature showing any marketed product effectively removes microplastics from the body. Fiber may speed gastrointestinal transit and could affect particles that have not yet been absorbed, but it has no known effect on particles that have already crossed into blood or tissue. Preclinical research in mice has explored binding agents, but mouse results cannot support human claims. Any supplement marketed as removing, flushing, or detoxifying microplastics from the body is making a claim that is not supported by current evidence and that carries FDA enforcement and FTC substantiation risk.
    **Question:**

    - **Name:** What Do FDA And EFSA Say About Microplastics In Supplements?
      **Answer:**

      - **Text:** Neither agency has established a specific regulatory limit for microplastics in dietary supplements. The FDA's position is that current scientific evidence does not demonstrate that levels of microplastics or nanoplastics detected in foods pose a risk to human health, while the agency continues to monitor the research. EFSA has not completed a full risk assessment and has scheduled its scientific opinion for finalization by the end of 2027. Neither agency has authorized any claim that a supplement removes, detoxifies, or protects against microplastics. Under DSHEA, the substantiation burden for any supplement claim, including a microplastics-related one, rests entirely with the brand.
    **Question:**

    - **Name:** What Is The Wellness Quality Institute Plastic-Free Pathway Verification?
      **Answer:**

      - **Text:** Plastic-Free Pathway Verification is an independent review of a brand's existing third-party laboratory data against published criteria aligned with the California State Water Board's drinking-water microplastics reference framework. The review examines laboratory qualification, analytical method, product matrix, sampling, tested particle-size range, polymer panel, reporting limits, contamination controls, chain of custody, and data recency. Where the standard is met, the brand receives a scope-locked verification, a license to use the approved mark WQI Plastic-Free Pathway Verified, and a public registry listing that anyone can check. The mark describes a verified pathway toward plastic-free standards, not a plastic-free product. The Wellness Quality Institute verification is not a certification, a California approval, or a government or health certification.
    **Question:**

    - **Name:** Does The Wellness Quality Institute Test Products?
      **Answer:**

      - **Text:** No. The Wellness Quality Institute reviews data from qualified independent laboratories. Testing is arranged and billed separately by the laboratory. The Wellness Quality Institute's role is to assess whether the laboratory's method, accreditation, contamination controls, and dataset meet the requirements of WQI-CS-01 and to issue approved claim language tied to what the reviewed evidence actually supports. That separation between the testing and the review is the source of the independence that makes the verification credible.
    **Question:**

    - **Name:** Is The Wellness Quality Institute Verification A Certification Or A California Approval?
      **Answer:**

      - **Text:** No to both. The Wellness Quality Institute deliberately does not use the word certification because certification implies a settled, guaranteed state that a product is free of plastic, and no such guarantee is scientifically available. The Wellness Quality Institute issues a verification of reviewed data and demonstrated progress toward plastic-free standards. California has not created, approved, authorized, or endorsed the Wellness Quality Institute or its standard. The Wellness Quality Institute aligns its criteria with California's drinking-water microplastics framework because it is the most stringent credible public reference available, not because California authorized the program. A verification is not a California approval, a government certification, or a health or safety certification.

  **BlogPosting:**

  - **Headline:** What Can We Claim About Microplastics In Supplements?
  - **Description:** Learn which microplastics claims are legal for U.S. supplement brands. The Wellness Quality Institute helps you stay compliant and credible.
  - **DateModified:** 2026-11-01T13:40:31.609Z
  - **Image:** https://cdn.aigrowthmarketer.co/1784829388732-c6255482b477.webp, https://cdn.aigrowthmarketer.co/1784829410323-fb401fc7b1e4.webp, https://cdn.aigrowthmarketer.co/1784829434095-0fc8fbcf29fa.webp
  - **InLanguage:** en-US
    **Person:**

    - **Name:** Scott Steveson
    - **JobTitle:** Specialist
    - **Description:** Scott Stevenson is part of the Wellness Quality Institute team, where he supports WQI’s work to advance product transparency, credible verification, and greater consumer trust. His background spans ethics and compliance, corporate trust, and responsible business, including experience with Ethisphere Institute and global companies navigating evolving standards and stakeholder expectations.
      **Organization:**

      - **Name:** Wellness Quality Institute
      - **Url:** https://www.wellnessqualityinstitute.com/
    **Organization:**

    - **Name:** The Wellness Quality Institute
    - **Url:** https://wellnessqualityinstitute.com


---

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## Citations

- [Plastic Claim Substantiation: Evidence Before You Claim](https://www.wellnessqualityinstitute.com/articles/plastic-claim-substantiation-evidence-requirements)
- [How To Make Plastic Reduction Claims That Hold Up](https://www.wellnessqualityinstitute.com/articles/substantiate-clean-label-plastic-reduction)
- [Plastic Claim Substantiation: A US Compliance Guide](https://www.wellnessqualityinstitute.com/articles/plastic-claim-substantiation-compliance-guide)
- [Microplastics Verification Standards: A Complete Guide](https://www.wellnessqualityinstitute.com/articles/microplastics-verification-standards-guide)
- [What Microplastic Test Results Actually Mean](https://www.wellnessqualityinstitute.com/articles/what-microplastic-testing-actually-proves)

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