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Quality Peptide USAQuality Peptide USA

Why Us

The American standard in research-grade peptides

Six commitments we publish, measure and stand behind — on every batch, on every order.

01

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

02

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

03

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

04

Same-day fulfillment

Orders placed before 2PM EST ship the same business day, tracked and insured.

2–3 days

avg domestic delivery

05

Discreet, cold-safe packaging

Plain outer box, non-descript billing descriptor, insulated packing on temperature-sensitive lots.

Zero

identifying marks

06

Damage & error coverage

Broken vial or wrong item? Report within 72 hours and we replace it at no cost.

72 hrs

free replacement window

Every claim is verifiable

Pull any batch COA before you buy — purity, identity and endotoxin data, published in full.

Open COA library