Peptide vendors that publish COAs
Peptide vendors that publish COAs? Of the five in our index, we've read one, Peptara Labs, and it does. Its certificate index (peptaralabs.io/coa, read 2026-09-01) publishes certificates for its 16 listed items, with 2 shown as Pending.
The laboratory named is Titreon Analytical, described by Peptara Labs as a third-party laboratory whose quality system is aligned to ISO/IEC 17025:2017, not itself accredited. Peptara Labs also publishes 4 second-laboratory endotoxin reports.
The other four suppliers say Not public in that cell. We hold no record either way and haven't opened their pages. It's no claim that they publish no certificates.
Links to Peptara Labs are affiliate links, and we may earn a commission when you buy through them.
Which lab tests Peptara Labs products?
Titreon Analytical, according to its certificates. Peptara Labs describes it as a third-party laboratory whose quality system is aligned to ISO/IEC 17025:2017, not itself accredited. Its certificate index gives the name and alignment, and its trust page the qualifier (all read 2026-09-01). We copy the wording whole.
Where does this answer come from?
It comes from the index on our front page: row 1 is Peptara Labs, rows 2 to 5 are four suppliers whose pages we haven't read. The column definitions page explains each column and Not public.
What does a Peptara Labs COA test for?
Identity (HPLC retention-time matching and LC-MS) and purity by HPLC, which must reach not less than 95.0 percent for release. Also sterility, net peptide content, bacterial endotoxin, five metals and a fentanyl immunoassay screen, per its certificate index (read 2026-09-01). The five metals (lead, arsenic, mercury, chromium and cadmium) were all Not Detected on the published batches.
Can a Peptara Labs COA be tied to a specific vial?
Only through Peptara Labs. Its vials carry no label, by design, and its certificate index (read 2026-09-01) gives one route: message support with your order number. We haven't placed an order or used that route.
Research use: our rows describe public pages and documents, never people, and we give no medical advice. Compounds named on this site: research-grade material with no approved human use.