Built for researchers who treat the COA like the only marketing copy that matters.
S1 Labs supplies research-grade peptides to laboratories, universities, and independent investigators across the United States. We focus on documentation, lot integrity, and shipping reliability — the parts of the supply chain that quietly decide whether your data is reproducible.
Solid-phase synthesis at audited US facilities. We do not source from grey-market overseas brokers.
Every lot is sent to a third party for HPLC purity and ESI-MS identity confirmation before release.
Protective packaging and same / next-day cut-off windows keep every shipment documented in transit.
If a vial leaves the lab without a public COA, it isn't one of ours.
Every Certificate of Analysis is published to /lab and tied to the lot number printed on the cap. If anything looks off, you can cross-reference, screenshot, and quote it. We treat that transparency as the floor, not the ceiling.
All products are sold strictly for laboratory and research purposes. They are not approved for human consumption, veterinary application, or therapeutic use. By purchasing you confirm understanding of this restriction.