Research peptides, held to a higher standard
Peptryn supplies research-grade peptides to laboratories and researchers across the United States, with independent third-party testing behind every batch we sell.
Our mission
We started Peptryn because researchers deserve a supplier they can actually trust: accurate labeling, verifiable purity, and documentation that stands up to scrutiny. Every compound we list is manufactured for laboratory research use only and is never marketed, packaged, or sold for human consumption, self-administration, or veterinary use.
What sets us apart
Independent third-party testing
Every batch is tested by an outside lab for purity, identity, and endotoxin levels before it’s listed for sale.
Documentation you can verify
Certificates of Analysis are published in our COA Library, referenced by lot number so you can match a report to your order.
US-based fulfillment
Orders are packed and shipped from our US facility, with tracking and discreet, unmarked packaging.
Research use only
Peptryn products are sold strictly for in-vitro and laboratory research purposes. They are not drugs, dietary supplements, or cosmetics, and are not intended to diagnose, treat, cure, or prevent any disease. By purchasing from Peptryn, you confirm that any products you order will be used solely for qualified laboratory research.