Independent third-party peptide testing.
Internal manufacturing tests are necessary but not sufficient. Independent third-party testing is what gives a Certificate of Analysis its credibility.
Testing evidence to request for the proposed lot
- Identity — HPLC retention time and mass spectrometry confirmation that what is in the vial is what is on the label.
- HPLC purity — review the actual quantitative result, method and applicable specification; no catalog-wide purity threshold is verified here.
- Endotoxin (LAL) — USP <85> LAL endotoxin testing.
- Sterility — sterility testing on finished-dose 503B product.
- Appearance — visual inspection of finished vials.
Why third-party
An internal lab can run a perfect test and a clinic still has no way to verify it. An independent lab provides a second set of eyes and a paper trail you can show to your medical director, pharmacist-in-charge, or state inspector. Read our breakdown of HPLC purity testing for more.
How to read the result
Any COA worth reading has, at minimum: product name, lot number, manufacture date, test date, identity result, purity result, endotoxin result, sterility result (finished dose), and the testing lab’s name and signature. If any of those are missing, ask for a complete one. See our guide on how to read a peptide COA.