Supplement Testing and Stability Labs Compared
Comparison and method last reviewed: August 8, 2026
13 testing and stability laboratories compared by Amazon TIC status, ISO/IEC 17025 accreditation, testing services, and capabilities. We found published evidence of Amazon TIC status for 8 of 13 labs; 7 of those are on Amazon's approved roster. The rest are marked not assessed rather than assumed either way. Organized alphabetically. This is not a ranking.
How to read this page. Every laboratory on this page was reviewed under our published editorial inclusion criteria, including ISO/IEC 17025 accreditation scope and no unresolved enforcement actions as of our most recent completed screening pass (dates and scope on our method page).
Each row presents factual, publicly available information. “Amazon TIC” indicates whether the lab is on Amazon's approved list of Testing, Inspection, and Certification providers for dietary supplement cGMP verification. Amazon publishes that roster only inside Seller Central, behind a seller login, so no one outside can read it directly. We mark a lab Yes only where published evidence supports it, either the provider's own Amazon-policy service page or trade reporting that names the roster, and we mark it not assessed otherwise rather than imply it is unapproved. ISO/IEC 17025 is the international standard for laboratory competence. Accreditation status indicates whether we confirmed the credential through an independent database (confirmed) or are reporting the lab's own claim (self-reported). Read our full comparison method →
Editorial independence: As of August 2026, no company has paid for inclusion, position, or preferential treatment. All listings are editorially determined. How we get paid →
| Laboratory | Trust level | Location | Amazon TIC | ISO 17025 | Confirmed certs | Testing services | Lead time |
|---|---|---|---|---|---|---|---|
| Alkemist Labs | Directory Listing | Garden Grove, California | No | Confirmed | 1(+1 self-reported) | Botanical Identity Testing, Potency Testing, HPTLC Analysis, Microscopy, Mushroom Testing | Not publicly disclosed |
| Anresco Laboratories | Directory Listing | San Francisco, California | Not assessed | Self-reported | 0(+1 self-reported) | Identity Testing, Potency Testing, Contaminant Screening, Microbiology Testing, Nutritional Labeling | Not publicly disclosed |
| Certified Laboratories | Directory Listing | Melville, New York | ✓ | Confirmed | 1(+2 self-reported) | Not listed | Not publicly disclosed |
| Contract Testing Laboratories of America | Directory Listing | Not disclosed | Not assessed | Self-reported | 0(+1 self-reported) | Microbiology Testing, Identity Testing, Heavy Metal Analysis, Vitamin Testing, Stability Studies | Not publicly disclosed |
| Eurofins Scientific | Directory Listing | Des Moines, Iowa | ✓ | Confirmed | 1(+2 self-reported) | Identity Testing, Potency Testing, Heavy Metals, Microbial Testing, Stability Studies, Pesticide Residues, Shelf-Life Studies | 5-10 business days (standard), varies for stability |
| Intertek | Directory Listing | Champaign, Illinois | ✓ | Self-reported | 0(+2 self-reported) | Identity Testing, Potency Testing, Purity Testing, Microbial Testing, Shelf-Life Testing, Allergen Testing, Adulteration Screening | Not publicly disclosed |
| Labstat International | Directory Listing | Kitchener, Ontario | Not assessed | Confirmed | 1(+1 self-reported) | Identity Testing, Potency Testing, Heavy Metals, Microbial Testing, Stability Studies, Health Canada NHP Testing | Not publicly disclosed |
| Mérieux NutriSciences | Directory Listing | Crete, Illinois | ✓ | Confirmed | 1 | Microbiology Testing, Chemistry Testing, Heavy Metal Analysis, Nutritional Labeling, Contaminant Screening | Not publicly disclosed |
| Microchem Laboratory | Directory Listing | Round Rock, Texas | Not assessed | Self-reported | 0(+4 self-reported) | Not listed | Not publicly disclosed |
| NSF International | Directory Listing | Ann Arbor, Michigan | ✓ | Self-reported | 0(+2 self-reported) | Label Accuracy Testing, Contaminant Screening, Banned Substance Testing, Microbial Testing, Heavy Metals, Pesticide Testing | Not publicly disclosed |
| Qalitex Laboratories | Directory Listing | Irvine, California | Not assessed | Self-reported | 0(+1 self-reported) | Identity Testing, Potency Testing, Heavy Metal Analysis, Microbiology Testing, Stability Studies | 48 hours for standard panels |
| SGS Nutrasource | Directory Listing | Harrisburg, Pennsylvania | ✓ | Self-reported | 0(+2 self-reported) | Heavy Metals Testing, Vitamins Analysis, Minerals Testing, Clinical Trial Services, Product Certification | Not publicly disclosed |
| UL Solutions | Directory Listing | Canton, Massachusetts | ✓ | Self-reported | 0(+2 self-reported) | Identity Testing, Potency Testing, Heavy Metals, Pesticide Residues, Microbial Testing, DNA Testing (Botanicals) | Not publicly disclosed |
Selling supplements on Amazon? Since 2025, Amazon requires all dietary supplement sellers to verify cGMP compliance through an approved TIC provider. Of the 8 labs on this page for which we found published evidence either way, 7 are approved, which means they can handle both your product testing and Amazon compliance verification in one step. The remaining 5 have no published evidence we could find, so their status is unknown rather than negative — confirm directly with the lab. A lab that is genuinely not approved can still test your products, but you will need a separate TIC verification. Read our Amazon compliance guide →
What This Comparison Shows
Amazon TIC status
7 of the 8 labs we have checked are on Amazon's approved list for dietary supplement cGMP verification; the other 5 on this page are unassessed, not rejected. This matters because Amazon requires all supplement sellers to work with an approved TIC provider. If your lab is already on the list, you avoid the extra step (and cost) of a separate verification.
ISO/IEC 17025 accreditation
ISO/IEC 17025 is the international standard for testing laboratory competence. It confirms the lab follows validated test methods and maintains quality management systems. All 13 labs in this comparison list ISO 17025, though not all are independently confirmed. “Confirmed” means we found the accreditation in an independent database (A2LA, SCC, or ANAB registries). “Self-reported” means the lab claims the accreditation but we could not independently verify it at the time of review.
Testing services
Core supplement testing services include identity testing, potency (active ingredient quantification), heavy metals analysis, microbial testing, and stability studies. Some labs also offer specialized services like pesticide residue screening, allergen testing, banned substance testing, DNA testing for botanicals, and shelf-life prediction models. Labs typically provide a Certificate of Analysis (COA) for each test batch.
Scope of our review
Our review covers publicly available information: accreditations, testing services, Amazon TIC status, and facility details. Items like standard turnaround times, pricing structures, specific test method lists (USP, AOAC, etc.), and sample submission requirements should be evaluated through direct conversation with the lab.
What This Comparison Does Not Show
- Test accuracy or reliability. Lab performance requires proficiency testing results and accreditation body audits to evaluate.
- Pricing. Testing costs vary by method, sample type, turnaround time, and volume. Request quotes directly.
- Customer experience or communication quality. We do not collect or publish subjective reviews.
- All available testing labs. Many qualified laboratories are not yet in our directory.
Amazon publishes its approved TIC roster only inside Seller Central, behind a seller login, so we cannot read it and do not claim to. Each “Yes” here rests on published evidence recorded per laboratory: for most, the provider's own Amazon-dietary-supplements-policy service page; for the rest, a trade report naming the roster they appear on. That evidence was last re-read on August 20, 2026, which is a narrower check than the page review date above. This comparison reflects information available at the time of each laboratory's last review. Individual profiles show their specific review dates. Lab capabilities, accreditations, and Amazon TIC status can change. Check individual profiles and lab websites for the most current information.
What This Comparison Does Not Cover
- Accuracy or precision of individual test results
- Lab personnel qualifications or inter-lab comparison performance
- Turnaround time reliability or sample handling procedures
- Pricing or minimum sample requirements
- Method validation depth or method-specific detection limits
Disclaimer: This comparison is educational content based on publicly available information. It is not a recommendation, endorsement, or guarantee of any laboratory. Inventory Ready's assessments represent editorial opinions, not certifications or audits. Always conduct your own due diligence, including verifying accreditation status directly with the accreditation body, before selecting a testing partner. See our Terms of Service.