37 suppliers.
Ranked by Trust Score.
Our 9-point COA Trust Score is the most thorough verification system in the industry. Tap any badge below to see the full breakdown — including which tests are realistic per-batch and which are quarterly.
Modern Research Peptides
Valor Peptides
Peptidology
AMP Peptides
Ascension Peptides
Double R Labs
Flawless Compounds
Good Labs
Lab Sourced
Molecular Solutions
One Day Compounds
Purus Peptides
RetaOneLabs
AlgoRX
EZ Peptides
AMC Essentials
Atomik Labz
Biocase Innovations
Felix Chemical Supply
Glacier Aminos
Glow Aminos
Ion Peptide
LA Peptides
Modified Aminos
Nano Blue Labs
Renova Peptides
Solution Peptides
Solyn Peptides
Southern Aminos
We don't punish suppliers for being realistic.
Other comparison sites score suppliers red if they don't test heavy metals on every batch. That's misleading.
A full 9-category test panel from Janoshik or Eurofins costs $1,500-2,500 per batch. That's not economical for most suppliers, and they'd have to charge you 30% more if they did it. So they don't.
What good suppliers actually do: Per-batch identity, purity, net content, and sterility (the 4 core tests). Then quarterly rotation of heavy metals, endotoxins, residual solvents on a sample basis. This is industry standard and acceptable.
Our system rewards core test completeness AND gives credit for periodic bonus testing — without unfairly punishing suppliers for not doing economically impossible per-batch comprehensive testing.