Testing

Testing & Quality Control

How peptides are analyzed, what a COA proves, and where clean-looking reports still mislead.

testing · explainer

identity (LC-MS) confirmed

purity (HPLC) 99.746%

net content 12.63 mg / 10 mg label

heavy metals pass

endotoxin < 0.20 EU/mL

fentanyl not detected

sterility (14-day) no growth

TESTING · JULY 11, 2026 · 5 MIN READ · 3 PRIMARY SOURCES

testing · analysis

purity (HPLC) 99.4%

net content 86% of label

TESTING · JULY 8, 2026 · 1 MIN READ · 2 PRIMARY SOURCES

The Peptide Press Briefing

A weekly digest of peptide research, testing, clinical trials, and regulatory developments. No dosing advice. No product pitches.