About JB Peps
Research Peptides and Wellness 🧬
JB Peps supplies researchers and wellness professionals with the highest-purity peptides available — every batch independently verified, every order cold-chain shipped.
Our mission
The peptide market is full of inconsistent quality and vague sourcing. JB Peps was built to be different. We work directly with GMP-certified synthesis facilities, run every batch through independent third-party HPLC and mass spectrometry analysis, and publish the results. You know exactly what you're getting — because we do too.
GMP sourced · Cold-chain shipped · Lab verified
Quality standards
Every batch. Every time.
GMP-Certified Synthesis
All peptides are synthesized in ISO 9001-certified, GMP-compliant facilities with full chain-of-custody documentation.
Independent HPLC Analysis
Every batch is tested by a third-party analytical laboratory using high-performance liquid chromatography to verify purity ≥98%.
Mass Spectrometry Verification
Molecular weight confirmation via ESI-MS or MALDI-TOF on every product lot, ensuring correct sequence and no adducts.
Sterility & Endotoxin Testing
Lyophilized products are tested for microbial contamination and bacterial endotoxins per USP <71> and <85> standards.
Cold-Chain Logistics
All shipments are packed with pharmaceutical-grade cold packs and shipped overnight to preserve peptide integrity.
Independent Lab Testing
Every batch is tested by a third-party analytical laboratory for purity and identity verification.
Compliance & research use
JB Peps products are supplied exclusively for in vitro research, laboratory analysis, and preclinical studies. All products are sold under research-use-only (RUO) designation. We comply with all applicable federal and state regulations governing the sale of research chemicals. Purchasers are responsible for ensuring compliance with local regulations in their jurisdiction.
Not for human or veterinary use. Not for resale. For research use only.