Provider COA & testing transparency
An aggregate, factual view of certificate-of-analysis (COA) disclosure across 1000 active providers in the directory: who publishes COAs, which independent labs verify their products, and how many carry verified third-party testing. These are neutral facts — publishes yes, no, or unknown — not ratings or endorsements.
32
Publish COAs
3.2%
Disclosure rate*
1
Verified testing
3
Distinct labs
* Disclosure rate = providers publishing COAs as a share of the 1000 providers with a known answer (0 unknown, not yet observed).
0.1% of active providers carry verified third-party testing.
Labs used for disclosure
Independent laboratories named by providers that publish COAs, by number of disclosing providers.
| Lab | Providers |
|---|---|
| Janoshik Analytical | 5 |
| Freedom Diagnostics | 2 |
| HPLC and mass spectrometry testing | 1 |
Methodology & corrections
Disclosure facts are collected from provider websites and adjudicated through a quality gate before promotion. Each provider carries at most one current fact: whether it publishes a COA (yes / no / unknown), the lab named, and whether it has verified third-party testing. This page and the CSV reflect only reviewer-promoted, public facts — not unreviewed staging data. Figures cover the active directory only.
These are factual disclosure observations, not quality ratings or endorsements. “Unknown” means we have not observed a disclosure, not that a provider fails to publish. A provider that believes a fact is inaccurate can request a correction — see the contact page; corrections are logged and reviewed. PeptideBase provides educational research tools and provider discovery; it does not provide medical advice.
Cite this page
Data last updated September 2026
Free to reference and republish with attribution to PeptideBase. Choose a format:
PeptideBase. (2026). Provider COA & Third-Party Testing Transparency. Retrieved September 11, 2026, from https://peptidebase.io/data/coa-disclosure