Peptidescollective is a US-based vendor serving both retail buyers and bulk customers, with a catalogue spanning a broad range of peptides and pricing listed for nearly all of them. Around a third of the catalogue has Janoshik-verified COAs—24 reports averaging 99.6% purity. Community discussion about this vendor remains sparse on the sources Ground Truth tracks, so the anecdotal picture is incomplete.
Data last updated
Anecdotal signals
Testing coverage
Price
regional price-per-mg comparisons · prices checked 2mo ago
We don't issue verdicts — we publish the evidence and let it speak. We hold 57 captured lab documents (COAs) for this vendor. Our automated site audit has verified the vendor's published catalogue and COA surface. The sections on this page hold the evidence behind each of those numbers.
32 of 34 observed peptides have a COA mapped to them. Latest captured reports are from Janoshik.