Why Us
The American standard in research-grade peptides
Six commitments we publish, measure and stand behind — on every batch, on every order.
Who we are
Premium research-grade peptides, made in America
We started Quality Peptide USA to bring premium research-grade peptides to working researchers — synthesized, tested and shipped here in the United States. No shortcuts and no generic paperwork. Just integrity and American ingenuity in every vial.
Independent third-party testing
Every lot is verified by independent US labs — HPLC-MS purity, MALDI identity confirmation and endotoxin screening before release.
99.7%
avg purity · last 50 batches
Batch-matched COAs
The Certificate of Analysis you download is the one tied to the vial in your box. No generic reference sheets.
100%
lots documented
Synthesized in the USA
Solid-phase synthesis and packaging in cGMP-compliant US facilities with a fully domestic supply chain.
100% US
synthesis · packaging · ship
Same-day fulfillment
Orders placed before 2 PM Mountain Time (MT) on business days dispatch the same day. Estimated UPS delivery: 3 business days.
3 days
est. UPS delivery
Discreet, cold-safe packaging
Plain outer box, non-descript billing descriptor, insulated packing on temperature-sensitive lots.
Zero
identifying marks
Damage & error coverage
Broken vial or wrong item? Report within 7 days of delivery and we replace it at no cost.
7 days
free replacement window
Every claim is verifiable
Pull any batch COA before you buy — purity, identity and endotoxin data, published in full.