Research-Grade Peptides. Results You Can Verify.
99%+ purity, third-party COA verified, same-day US shipping. For laboratory research use only.
99%+
HPLC Purity
50k+
Researchers
<4hr
Support
Catalog
Featured Compounds
Every batch independently tested for purity and potency.
Third-Party Verified
Quality You Can Verify — Not Just Trust.
Every batch independently tested by accredited U.S. labs. We don't ask for your trust — we give you the proof.
99%+
Purity Guaranteed
50k+
Active Researchers
<4hr
Support Response
HPLC + Bioassay
Confirmed Active Compound
Every lot is tested for active peptide content using high-performance liquid chromatography paired with bioactivity verification. You get the compound you ordered at the concentration on the label.
Why it matters: Inactive or under-dosed peptides invalidate research data before you start.
99%+ Purity
Verified by HPLC
Built for Serious Research.
Backed by Real Results.
Always in Stock
BPC-157, TB-500, and 15+ peptides ready to ship same-day. No backorders.
Volume Discounts
Save up to 15% on bulk orders. Built for lab budgets.
Cold-Chain Shipping
Cold-pack shipping preserves peptide integrity. Discreet packaging with full tracking.
Research Community
Join 50k+ researchers. Access protocols, dosing data, and peer discussions.
99%+ Purity
Every batch HPLC and Mass Spec tested by accredited US labs. COA included.
Shipment Protection
Lost, damaged, or stolen? We reship at no cost. Every order, every time.
Answers
Frequently Asked Questions
Trusted by Researchers
What the Research Community Says
Verified feedback from laboratories, academic institutions, and research organizations.
"COAs match our in-house HPLC validation within 0.3% on every lot we've tested. That's the standard we need for publishable data."
Stanford Translational Lab
Principal Investigator
✓ Verified Purchaser — BPC-157, TB-500
"Reconstitution behavior is identical lot-to-lot. We finally stopped factoring vendor variability into our error bars."
Mount Sinai Research Group
Postdoctoral Researcher
✓ Verified Purchaser — GHK-Cu
"Same-day shipping kept our 14-day stability protocol on schedule. Cold packs arrived intact through a Texas summer."
Independent In-Vitro Lab
Lab Director
✓ Verified Purchaser — Tesamorelin
"The mass spec data on the COA matched the theoretical MW exactly. Identity confirmation without a second test saves us a week."
Boston University
Graduate Researcher
✓ Verified Purchaser — Semax, NAD+
"We benchmarked against three other suppliers. Sten was the only one with <1% peak impurities across every chromatogram."
Private Biotech Startup
Head of Discovery
✓ Verified Purchaser — CJC-1295 / Ipamorelin
"Support engineer answered a reconstitution buffer question in under an hour with a referenced protocol. Rare."
University of Michigan
Research Associate
✓ Verified Purchaser — SS-31