How we test

Every vendor review on Peptifact runs the same 14-point protocol. No exceptions, no sponsored fast lanes.

1. Anonymous test orders — at least two per vendor, placed like any customer would, spaced weeks apart.

2. Identity and purity verification — samples cross-checked against the vendor's published certificates of analysis via independent laboratory analysis; mismatches are reported exactly as found.

3. Operations audit — shipping time, packaging, cold-chain claims, support response time, and refund behavior, all measured and dated.

4. Value math — price per verified milligram, not price per label claim.

Scores update when the evidence updates. Every review lists what a vendor failed, not only what it passed, and material findings carry the order dates and documentation behind them.

Last updated: 2026-09. Material updates to this page are dated.