Research blog · category

COA & testing

5 articles in COA & testing. Research Use Only; not medical advice.

COA & testing

What labs test on research peptides

A buyer-oriented overview of common research peptide assays — identity, purity, content, and optional sterility/endotoxin panels Research Use Only — not for hum2026-11-058 min readReadCOA & testing

Fake peptide COA red flags

Practical red flags for forged or recycled peptide certificates — mismatched lots, undated PDFs, and labs that do not resolve Research Use Only — not for human2026-11-048 min readReadCOA & testing

Third-party peptide testing explained

What “third-party tested” should mean for research peptides — independent labs, lot linkage, and limits of a single PDF Research Use Only — not for human consum2026-11-038 min readReadCOA & testing

HPLC purity vs content assays

Why peptide purity percentages and measured content assays answer different questions — and which one your purchasing SOP should demand Research Use Only — not2026-11-028 min readReadCOA & testing

How to read a peptide COA

Plain-language walkthrough of certificate of analysis fields research buyers should verify before ordering peptides Research Use Only — not for human consumptio2026-11-018 min readRead