Northwest Peptides is a vendor that operates both retail and bulk sales models, with a minimum vial quantity of 1. They have a catalogue of 44 peptides, with 19 of these peptides having a certificate of analysis, or COA, which reports a purity of 99.84%. The vendor lists prices for nearly all of its peptides. With 46 COAs available, Northwest Peptides provides some level of testing transparency, although the scope of this testing is limited to less than half of its catalogue.
Data last updated
Anecdotal signals
Price
regional price-per-mg comparisons · prices checked 2d ago
We don't issue verdicts — we publish the evidence and let it speak. We hold 46 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.
19 of 42 observed peptides have a COA mapped to them.