Verification

Certificate of analysis library

Every batch we release is tested by an independent ISO/IEC 17025 laboratory. Search by batch number, lot or product to pull the exact certificate that shipped with your vial.

Certificates

99.07%

Average purity

Products covered

Independent labs

Product	Batch	Lot	Tested	Laboratory	Purity	Identity
TB-500 · 5 mg	PQX26071021	L26195-003	Jul 14, 2026	Janoshik Analytical	98.7%	Confirmed	Open →
TB-500 · 5 mg	PQX26071028	L26194-004	Jul 13, 2026	Colmaric Analyticals	99.12%	Confirmed	Open →

How to read a COA. Purity is measured by HPLC-UV against the total peak area; identity is confirmed by LC-MS against the expected monoisotopic mass; net content verifies the fill weight in the vial. If a batch does not meet spec, it is not released.