COA Certified · Every Batch TestedSame-Day Shipping on Orders by 2PM ESTUSA Sourced · USA ShippedFree Shipping on Orders Over $3004.9/5 from 2,400+ Verified Researchers
COA Certified · Every Batch TestedSame-Day Shipping on Orders by 2PM ESTUSA Sourced · USA ShippedFree Shipping on Orders Over $3004.9/5 from 2,400+ Verified Researchers
Quality Peptide USAQuality Peptide USA

Third-Party Verified

Lab Testing You Can Verify

Every batch undergoes independent testing at accredited laboratories. Full Certificates of Analysis are publicly available — before you buy.

99.7%

Avg Purity (last 500 batches)

100%

COA Coverage

0

Failed Batches in 2025

01 — Endotoxins

Toxic fragments left behind by dead bacteria. Heat-stable and biologically active. Invisible to HPLC and mass spec — we screen every batch by LAL.

02 — Sterility

The absence of living microbial contamination. We culture against USP standards rather than assuming sterility from a clean chromatogram.

03 — Heavy Metals

Lead, arsenic, mercury, and cadmium are inorganic and invisible to HPLC/MS. We test by ICP-MS — a separate assay most suppliers skip.

04 — Batch Consistency

Spot-checking one vial is industry standard. We pull multiple samples per batch and test against the same reference every run.

05 — Identity

Confirmation that the molecule is what the label says. MALDI-TOF mass spectrometry and amino acid analysis (AAA).

06 — Purity

HPLC-MS quantification of the target compound as a percentage of total material. All batches certified ≥ 99%.