Question 1

What does the purity reading mean on this Cortagen COA?

Accepted Answer

No purity reading is on file for this COA. Some certificates record identity confirmation (correct compound, correct molecular weight) without a numeric purity percentage — check the individual test fields for details.

Question 2

How do I verify this Cortagen COA from MDx BioAnalytical Laboratory is real?

Accepted Answer

To verify this COA is genuine: (1) confirm the issuing lab — MDx BioAnalytical Laboratory — is a real, independently operating laboratory by searching it outside the vendor's website; (2) if the COA includes a verification ID or QR code, use the lab's public portal to cross-reference; (3) check that the lot number on the COA matches the lot number on your order. Merit Verified indexes this result from MDx BioAnalytical Laboratory as a third-party record — the original COA document from the lab is the authoritative source.

Question 3

Is BioLongevity Labs a legitimate peptide vendor?

Accepted Answer

Merit Verified has a vendor profile for BioLongevity Labs with independent COA evidence on file. A COA on file is not an endorsement — it means this specific lot was independently tested. For a full evidence picture including Merit Score, lab diversity, and purity history, see the vendor profile on Merit Verified.