Which Supplement Brands Are Third-Party Tested?

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We checked 7,882 supplement brands against NSF, USP, Informed Sport, and Informed Choice databases. Only 4,274 (54%) have any third-party testing — and just 626 hold a recognized certification.

If you have searched "is [brand] third party tested" for a specific supplement, you are asking the right question. The FDA does not approve supplements before sale, so third-party testing is the only independent way to verify that a product contains what the label claims and is free from contaminants.

This guide lists the supplement brands that are actually third-party tested, organized by certification type. Every brand listed here has been cross-referenced against official certification databases — not just marketing claims on a label.

Some links on this page are affiliate links. We earn a commission at no extra cost to you. This does not influence our trust scores or rankings.

4,274
Brands Tested
75
NSF Certified
10
USP Verified
549
Informed Sport/Choice

Which supplement brands are third-party tested?

Of the 7,882 brands in our database, only 4,274 (54%) report any third-party testing, and just 626 hold a recognized NSF, USP, or Informed Sport/Choice certification. The highest-scoring verified brands are Bluebonnet Nutrition, NutriDyn, Ghost, NaturesPlus, Bare Performance Nutrition — each listed below with its certification and trust score.

Top 5 Third-Party Tested Brands

Highest trust scores among all brands with a recognized independent certification.

#1
NSF Certified GMP
#2
NutriDyn 100/100 A+
NSF Certified GMP
#3
Ghost 100/100 A+
Informed Sport GMP
#4
NaturesPlus 100/100 A+
NSF Certified GMP
#5
Informed Sport GMP

See the complete verified list of all 4,274 tested brands for the full ranking.

Is [your brand] third-party tested?

Below is a direct yes/no/partial answer for the 16 most-searched supplement brands, each verified against the NSF, USP, and Informed Sport/Choice public databases rather than label marketing. Click any brand name for the full trust report, or use the A-Z lookup to check any of the 7,882 brands in our database.

Is Culturelle third-party tested?

Yes. Culturelle holds USP Verified certification — verified against the certifier's public database. Trust score 90/100.

USP Verified 90/100 · A+

Is AdvoCare third-party tested?

Yes. AdvoCare holds Informed Sport certification — verified against the certifier's public database. Trust score 5/100.

Informed Sport 5/100 · F

Is Ritual third-party tested?

Yes. Ritual holds USP Verified certification — verified against the certifier's public database. Trust score 80/100.

USP Verified 80/100 · A

Is Thorne third-party tested?

No. Thorne does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 60/100.

No Cert 60/100 · B

Is Nature Made third-party tested?

Yes. Nature Made holds USP Verified certification — verified against the certifier's public database. Trust score 75/100.

USP Verified 75/100 · B+

Is Garden of Life third-party tested?

Yes. Garden of Life holds NSF Certified for Sport certification — verified against the certifier's public database. Trust score 75/100.

NSF Certified 75/100 · B+

Is Optimum Nutrition third-party tested?

Yes. Optimum Nutrition holds Informed Sport certification — verified against the certifier's public database. Trust score 100/100.

Informed Sport 100/100 · A+

Is NOW Foods third-party tested?

No. NOW Foods does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 40/100.

No Cert 40/100 · D

Is Vital Proteins third-party tested?

Yes. Vital Proteins holds NSF Certified for Sport certification — verified against the certifier's public database. Trust score 100/100.

NSF Certified 100/100 · A+

Is KAL third-party tested?

No. KAL does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 60/100.

No Cert 60/100 · B

Is Bronson Vitamins third-party tested?

Yes. Bronson Vitamins holds NSF Certified for Sport certification — verified against the certifier's public database. Trust score 100/100.

NSF Certified 100/100 · A+

Is Ancestral Supplements third-party tested?

No. Ancestral Supplements does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 65/100.

No Cert 65/100 · B

Is Momentous third-party tested?

Yes. Momentous holds Informed Sport certification — verified against the certifier's public database. Trust score 90/100.

Informed Sport 90/100 · A+

Is Athletic Greens third-party tested?

No. Athletic Greens does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 50/100.

No Cert 50/100 · C

Is Kirkland Signature third-party tested?

Yes. Kirkland Signature holds USP Verified certification — verified against the certifier's public database. Trust score 80/100.

USP Verified 80/100 · A

Is Nature's Bounty third-party tested?

No. Nature's Bounty does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 25/100.

No Cert 25/100 · F

Don't see your brand? Use the A-Z lookup below to check any of the 7,882 brands in our database.

How can I look up any brand's third-party testing status?

Use the A-Z list below — every one of the 7,882 supplement brands in our database is alphabetized with its current certification badge (NSF, USP, Informed Sport/Choice, Claims Only, or No Cert). Click a brand name for the full trust report, FDA record, and score breakdown.

Other 89 brands
A 592 brands
B 540 brands
C 480 brands
D 269 brands
E 312 brands
F 221 brands
G 366 brands
H 385 brands
I 203 brands
J 92 brands
K 141 brands
L 353 brands
M 426 brands
N 698 brands
O 199 brands
P 559 brands
Q 28 brands
R 275 brands
S 637 brands
T 329 brands
U 103 brands
V 260 brands
W 179 brands
X 30 brands
Y 49 brands
Z 67 brands

Badge legend: NSF Certified USP Verified Informed Sport/Choice Claims Only No Cert

What is third-party testing?

Third-party testing means an independent laboratory with no financial ties to the manufacturer has analyzed the product to confirm it contains what the label claims and is free of contaminants like heavy metals, pesticides, and banned substances. Four major programs do this at different levels of rigor — NSF Certified for Sport, USP Verified, Informed Sport, and Informed Choice — compared below.

Certification Tests For Facility Audit Best For Brands in DB
NSF Certified for Sport Label accuracy + 270+ banned substances + contaminants Annual Athletes 75
USP Verified Identity + potency + purity + dissolution Annual General consumers 10
Informed Sport WADA banned substances + label accuracy No Athletes 462
Informed Choice Banned substances + contaminants No General consumers 131

Not all "third-party tested" claims are equal. A brand that holds NSF Certified for Sport has undergone rigorous batch-level testing and annual facility audits. A brand that simply prints "third-party tested" on its label — without naming the lab or holding a recognized certification — may have done minimal or no independent testing.

For a deeper comparison, see our NSF vs USP vs Informed Sport guide. For an explanation of what third-party testing covers, read How to Check If Your Supplement Is Third-Party Tested.

Which brands are NSF Certified for Sport?

75 brands in our database hold active NSF Certified for Sport — the gold standard, with every batch tested for 270+ banned substances, verified label accuracy, and annual facility audits. The certification is required by the NFL, MLB, NHL, and PGA Tour. The full list of 75 NSF-certified brands is below.

Top NSF Pick

...and 59 more NSF-certified brands. Search all brands

Which brands are USP Verified?

10 brands in our database hold the USP Verified mark, which confirms label-accurate ingredients and dosages, proper dissolution for absorption, and freedom from harmful contaminants. USP is a 200-year-old scientific nonprofit, and pharmacists and hospitals treat its verification as the gold standard for consumer vitamins and minerals. These 10 brands carry it:

Top USP Pick

Shaklee 100/100

Which brands are Informed Sport certified?

462 brands in our database hold Informed Sport certification, which tests every batch against the WADA prohibited substances list at the UK's LGC Group. It is recognized by the Premier League, UFC, and international federations. Unlike NSF, it does not include facility audits — it is batch-level testing only. The highest-scoring Informed Sport brands are below.

Top Informed Sport Pick

Ghost 100/100

...and 446 more Informed Sport brands. Search all brands

Which brands are Informed Choice certified?

131 brands in our database hold Informed Choice, the consumer-focused sibling of Informed Sport that also runs batch-level testing for banned substances and contaminants at LGC Group. The key difference is audience — Informed Choice targets everyday health-conscious buyers rather than competitive athletes.

...and 119 more Informed Choice brands. Search all brands

Which brands claim third-party testing but hold no recognized certification?

Of the 4,274 brands reporting some third-party testing, 3,734 claim it but hold no recognized NSF, USP, or Informed Sport/Choice certification — meaning the claim cannot be independently verified. That does not automatically make the claim false, but it puts the burden of proof on the brand. Here is how to evaluate them.

Many of these brands use legitimate independent labs (Eurofins, Silliker, Covance) for testing but have not gone through the more expensive and rigorous certification process. Without a recognized certification, however, there is no easy way for consumers to verify the claim.

How to evaluate "claims only" brands:

  • Do they name the lab? A brand that says "tested by Eurofins" is more credible than one that just says "third-party tested."
  • Do they publish COAs (Certificates of Analysis)? Some brands post batch-specific lab results on their website. This is a strong signal — check how to read them.
  • Do they have GMP certification? GMP is the manufacturing baseline. Without it, any testing claim is less meaningful.
  • What is their FDA record? No warning letters or recalls is a good sign.

You can check any of these brands in our brand checker tool to see their full trust score breakdown.

How do tested brands compare to untested ones?

Third-party tested brands score an average of 75.2/100 on our trust index versus 51.6/100 for untested brands — a 23.6-point gap across all 7,882 brands. Brands that invest in independent testing tend to have fewer FDA issues, better manufacturing standards, and more transparency overall. Here is what the numbers show.

54%
of brands have any testing
75.2
avg trust score (tested)
51.6
avg trust score (untested)

Brands with third-party testing score an average of 75.2/100 on our trust index, compared to 51.6/100 for untested brands — a 23.6-point gap. This difference reflects the broader pattern: brands that invest in independent testing tend to have fewer FDA issues, better manufacturing standards, and greater transparency across the board.

Only 626 brands (8% of all brands) hold a recognized certification from NSF, USP, or Informed Sport/Choice. That means the vast majority of the supplement industry operates without any independently verifiable quality assurance.

How do I verify a brand's third-party testing claims?

Verify a brand's claim in four steps: search SupplementChecker, confirm the certification directly on the NSF, USP, or Informed Sport website, look for a certification mark on the label, and ask the brand for the lab name and a recent Certificate of Analysis. Do not take "third-party tested" on a label at face value — here is the full process.

  1. Check SupplementChecker: Search our database for the brand. We cross-reference against NSF, USP, and Informed Sport/Choice databases and show the brand's certification status, FDA record, and trust score.
  2. Verify on the certifier's site:
  3. Look for a certification mark on the label. NSF uses a blue circle, USP uses a gold shield, Informed Sport uses a green checkmark. If there is no mark, the brand likely does not hold that certification.
  4. Ask the brand directly. Request the name of the testing lab and a recent Certificate of Analysis (COA). Legitimate brands will provide this without hesitation.

What else do people ask about third-party tested brands?

Which supplement brands are third-party tested?

Out of 7,882 brands in our database, 4,274 (54%) have third-party testing. Of those, 75 are NSF Certified for Sport, 10 are USP Verified, and 549 carry Informed Sport or Informed Choice certification. The rest claim third-party testing but do not hold a recognized certification. Top brands include Thorne, Momentous, Nature Made, Optimum Nutrition, and Vital Proteins.

How do I check if my supplement is third-party tested?

Look for a certification mark on the label — NSF Certified for Sport (blue circle), USP Verified (gold shield), or Informed Sport (green checkmark). Then verify the brand on the certifying organization's website. You can also search our database at supplementchecker.co/check/ to see a brand's certification status and trust score.

Is NSF or USP better for supplements?

NSF Certified for Sport is better for athletes — it tests for 270+ banned substances and audits facilities annually. USP Verified is better for general consumers — it focuses on pharmaceutical-grade purity, potency, and dissolution. Both are rigorous. If you're a competitive athlete, choose NSF. If you want quality assurance for daily vitamins, USP is excellent.

What does 'third-party tested' mean on a supplement label?

It means an independent laboratory — not owned by the supplement company — has tested the product for label accuracy, contaminants, and purity. However, the term is unregulated. Any brand can print it on their label. The most reliable claims are backed by NSF, USP, or Informed Sport certifications that can be verified online.

Are third-party tested supplements worth the extra cost?

Yes. Third-party tested supplements cost 10-30% more on average, but independent testing regularly finds untested products with inaccurate labels, heavy metals, or undeclared ingredients. Brands with verified third-party testing score 75.2 on average in our trust analysis, compared to 51.6 for untested brands. The quality assurance is worth the premium.

What percentage of supplement brands are third-party tested?

Only 54% of the 7,882 brands in our database have any form of third-party testing. And only 626 hold a recognized certification from NSF, USP, or Informed Sport/Choice. The majority of the supplement industry operates without independent verification.

Is Culturelle third-party tested?

Yes. Culturelle holds USP Verified certification — verified against the certifier's public database. Trust score 90/100.

Is AdvoCare third-party tested?

Yes. AdvoCare holds Informed Sport certification — verified against the certifier's public database. Trust score 5/100.

Is Ritual third-party tested?

Yes. Ritual holds USP Verified certification — verified against the certifier's public database. Trust score 80/100.

Is Thorne third-party tested?

No. Thorne does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 60/100.

Is Nature Made third-party tested?

Yes. Nature Made holds USP Verified certification — verified against the certifier's public database. Trust score 75/100.

Is Garden of Life third-party tested?

Yes. Garden of Life holds NSF Certified for Sport certification — verified against the certifier's public database. Trust score 75/100.

Is Optimum Nutrition third-party tested?

Yes. Optimum Nutrition holds Informed Sport certification — verified against the certifier's public database. Trust score 100/100.

Is NOW Foods third-party tested?

No. NOW Foods does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 40/100.

Is Vital Proteins third-party tested?

Yes. Vital Proteins holds NSF Certified for Sport certification — verified against the certifier's public database. Trust score 100/100.

Is KAL third-party tested?

No. KAL does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 60/100.

Is Bronson Vitamins third-party tested?

Yes. Bronson Vitamins holds NSF Certified for Sport certification — verified against the certifier's public database. Trust score 100/100.

Is Ancestral Supplements third-party tested?

No. Ancestral Supplements does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 65/100.

Is Momentous third-party tested?

Yes. Momentous holds Informed Sport certification — verified against the certifier's public database. Trust score 90/100.

Is Athletic Greens third-party tested?

No. Athletic Greens does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 50/100.

Is Kirkland Signature third-party tested?

Yes. Kirkland Signature holds USP Verified certification — verified against the certifier's public database. Trust score 80/100.

Is Nature's Bounty third-party tested?

No. Nature's Bounty does not hold any recognized third-party certification (NSF, USP, Informed Sport/Choice) and does not publicly claim independent testing. Trust score 25/100.

Where can I read more about supplement testing?

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