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COA & Lab Testing

How third-party testing works and how to read a Certificate of Analysis.

Janoshik Testing: Methods, COA Verification & Lab Comparison

Complete guide to Janoshik Analytical: testing methods, sample submission, COA verification, pricing, limitations, and cross-lab comparison data.

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Peptide Purity: What Your COA Numbers Mean

What peptide purity percentages actually measure, how to read a COA field by field, the TFA salt math most buyers miss, and how to spot a fabricated certificate.

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Peptide Testing: Every Method and What Vendors Skip

Complete guide to peptide testing methods: HPLC, mass spectrometry, endotoxin, NPC, and how to spot fake COAs. 43% failure rate explained.

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