Independent documentation audit

From 25 peptide suppliers to a lot-verified shortlist.

Public, product-specific COAs with matching lots, report identifiers, and named laboratories — checked product by product.

Screened: 25
Deep audit: 11
Excellent: 4

Suppliers Ranked

COA transparency and testing thoroughness.

We audit for COA transparency, lot traceability, complete batch testing, and value.

Marks report the outcome on the reviewed COA — a test that was run and passed — not merely that a test was listed.

Research peptide suppliers rated on COA transparency and testing thoroughness
	HPLC Purity	Measured Quantity	Sterility	Endotoxin	Heavy Metals	Lot Tracking
IDUN Peptides (opens supplier website)	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	Excellent
PS Peptides (opens supplier website)10% off code: ROCKER	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	Excellent
Midwest Peptide (opens supplier website)	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	Excellent
BioEdge Research Labs (opens supplier website)	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	All reviewed products passed this individual check.	Excellent
Rejuven8 Peptides	All reviewed products passed this individual check.	All reviewed products passed this individual check.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	All reviewed products passed this individual check.	Good
Honest Peptide	All reviewed products passed this individual check.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	All reviewed products passed this individual check.	Good
Panda Peptides	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	All reviewed products passed this individual check.	Good
Verified Peptides	All reviewed products passed this individual check.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	Good
Apollo Peptide Sciences	Some products passed this check; others had nothing published.	No COA found showing this test at all.	No COA found showing this test at all.	No COA found showing this test at all.	No COA found showing this test at all.	Some products passed this check; others had nothing published.	Limited
Core Peptides	Some products passed this check; others had nothing published.	Some products passed this check; others had nothing published.	No COA found showing this test at all.	No COA found showing this test at all.	No COA found showing this test at all.	Some products passed this check; others had nothing published.	Limited
Qureshi Labs	Some products passed this check; others had nothing published.	No COA found showing this test at all.	No COA found showing this test at all.	No COA found showing this test at all.	No COA found showing this test at all.	No COA found showing this test at all.	Limited

All reviewed products passed this individual check.: All reviewed products passed this individual check.
Some products passed this check; others had nothing published.: Some products passed this check; others had nothing published.
No COA found showing this test at all.: No COA found showing this test at all.

Green checks apply to one column at a time. No supplier had a complete qualifying COA for every product reviewed. No supplier outside the Excellent-rated companies had even one product whose COA met all six criteria. See every qualifying product and company.

HPLC purity: purity result reported and meets the stated spec
Measured quantity: measured net peptide per vial matches the label
Sterility: sterility or microbial test reported as passing
Endotoxin: endotoxin reported within limits
Heavy metals: heavy-metals panel reported within limits, none detected above them
Lot tracking: lot and batch numbers tied to a named report

Research snapshot updated September 1, 2026

These 11 suppliers remained after the initial screen. Weight sits on catalog-wide consistency, not one impressive certificate. Missing public evidence is recorded as missing—not as a failed test. Each supplier name opens its full profile, and transparency is not a guarantee of quality by Blue Horizon Research.

Evidence before reputation

Product matched. Lot traced. Laboratory report independently checked whenever a public verification system was available.

We looked past broad “third-party tested” claims to find public, product-specific COAs with matching lots, report identifiers, named laboratories, and complete analytical coverage.