AmericanPeptide
Tools/COA Decoder

Decode & grade a COA

A Certificate of Analysis is what should let you trust a powder you cannot see into. Paste one below — every field gets explained in plain English, scored against a transparency checklist, and, when we recognize the peptide, cross-checked against verified chemistry.

Analyzed on demand and never stored or logged.

How this grade is calculated

Each transparency item present on the COA earns its weight; the score is the sum over the maximum. Grades: A ≥85% · B ≥70% · C ≥55% · D ≥40% · F below.

  • Purity (HPLC)×2
  • Identity — mass spectrometry×2
  • Peptide / net content×2
  • Water content (Karl Fischer)×1
  • Counterion (acetate / TFA)×1
  • Endotoxin / sterility×1
  • Lot, dates & traceability×1
  • Test methods named×1