Methodology — scoring v2

Version 2, applied to 79 vendors on November 6, 2026. The score reflects what a vendor publicly shows on its own website. It is a measure of observable evidence and transparency — not a certification that any product is safe, pure or effective.

What is scored (100 points)

Lab transparency: validated with the lab

A lab report on a vendor's own site is the vendor's claim. It counts here only once we have matched it to the issuing lab's own public record — the lab's lookup page, the report hosted on the lab's domain, or the lab's published registry. Copies of the same report count once. The first validated report earns 10 points, the second 5 more and the fourth 5 more (20). A lab-validated endotoxin report earns 5. The last 15 points are for validation experience: 10 or more validated reports. A vendor whose website is under a year old gets a head start: the fourth-report step at 2 reports, and 5 of the experience points at 5 reports, with the full 15 at 10. Every bar is a fixed number any vendor can reach, so one vendor's score never drops because others added reports. Every vendor's count is shown on its profile, and the directory can sort by it.

Every lab lookup is tested with a made-up code before it counts; a lookup that confirms a fake would earn nothing. Reports from labs with no public record (email-only, login-only or no lookup at all) can't be validated, so they earn none of these points.

Evidence coverage

Shown separately from the score. 100% means we could read the vendor's website directly. Some stores sit behind age or research-access gates or block automated visits; those show lower coverage, and their score reflects only what we could see.

Social media popularity is not scored.

How lab reports are read

We open each vendor's lab-results page (in a real browser when the page builds its gallery with scripts) and read the reports it links to: PDFs as text, and report images with on-device text recognition. From each report we record the testing lab, the test date, the lot or batch number, the methods and panels (mass spec, HPLC, sterility, endotoxin) and whether the report can be checked with the lab itself (a lab-hosted report, verification code or task number). "Recent" and "ongoing" are based on those dates.

Batch/lot lookups — where you enter your vial's lot number to see its report — earn the "publishes lab reports" and lot-number checks, but not recency or lab verification, because nothing is visible before you buy. If we couldn't read a vendor's reports, the profile says so and shows lower evidence coverage: that's our gap, not necessarily theirs.

Not yet measured

Whether the measured amount matches the label; weighting reports by the lab's own track record (lab profiles in progress); and refund terms. These will be listed here when they count.

Corrections

Shops can send corrections or missing documentation to hello@pepassess.com. PepAssess re-checks every submission.

Put it to use: current peptide coupon codes, the lowest peptide prices with a code, and sellers with lab reports for Retatrutide, Tirzepatide and BPC-157.