Independent vendor research

Independent peptide vendor reviews based on verifiable evidence.

Investigate COAs, laboratory identity, batch matching, testing scope, company transparency, red flags, and missing evidence without hidden rankings or medical advice.

Browse vendors How we review evidence

No pay-to-rank placements

Dated source trails

Visible corrections

Educational, not medical

Start your investigation

Move from a vendor name to the evidence behind it.

Start with a reviewed profile, compare objective findings, then audit the underlying COAs and testing concepts.

Investigate

Browse vendor evidence profiles

See the verdict, COA transparency, testing scope, traceability, red flags, and missing evidence for each reviewed vendor.

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Compare

Compare objective vendor evidence

Compare only the criteria supported by enough dated evidence to make the differences meaningful.

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Audit

Understand COAs and lab testing

Learn what identity, purity, quantity, sterility, endotoxin, and batch matching can and cannot establish.

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A review system you can inspect

Trust should come from the process, not the score.

We preserve source dates, distinguish document verification from product conclusions, and publish the criteria behind every assessment.

See the full methodology

Source claims are separated from our analysis.

Evidence dates and limitations stay visible.

Corrections do not disappear into silent edits.

Commercial relationships never determine conclusions.

From the evidence library

Read the reasoning, not just the answer.

Editorial explainers and assessment notes are published from our structured evidence library.

A magnifying glass examines an abstract peptide certificate of analysis against a coral and apricot scientific illustration.

Testing literacy

How to Read a Peptide COA: 12 Checks Before You Trust the Document

A practical, source-backed checklist for verifying a peptide COA’s laboratory, lot, methods, purity basis, quantity, microbiological results, and authenticity.

14 min read

An abstract peptide ribbon passes through five analytical testing windows against a lilac and powder blue scientific illustration.

Testing literacy

Peptide Testing Explained: Identity, Purity, Quantity, Sterility, Endotoxin, and COAs

A method-by-method guide to what peptide identity, HPLC purity, quantity, sterility, endotoxin, and third-party reports can and cannot establish.

13 min read

Live evidence database

Built to show what we know and what we do not.

3Reviewed vendor profiles

13Lab reports indexed

3Published assessments