How we rate a shop
The short version: scores from public information, sources linked, gaps shown as gaps, reviews only from verified emails.
Methodology
- 1
Some shops are affiliate partners
We earn a commission on purchases through our links at some shops, and that can influence where they are placed in the ranking. Their scores use the same five criteria, and their red flags stay on the page.
- 2
Scores are editorial estimates
Every other shop is scored from public information: its own website where we could confirm one, and public listings such as PeptidesLookup, linked under “Sources” on each shop page. We have not run lab tests, and we don’t pretend we have.
- 3
Unknown means “not published”
If a shop doesn’t publish a fact — payment methods, refund policy, lab reports — the facts sheet says “not published”. We never fill a gap with a guess.
- 4
Reviews only from verified emails
Reader reports require a verified email and are read by a person before they go live. Public ratings from other sites are quoted with their source and review count, never blended into our score. When nobody has reviewed a shop, we say so.
Some shops on this site are affiliate partners: we earn a commission on purchases through our links, and this can influence their placement.
The trust score formula
Each criterion is scored 0–10 from public information. The trust score is the weighted average.
-
Purity & testing 30 %
Stated purity, independent HPLC/MS testing, batch-level COAs.
-
Transparency 20 %
Identifiable operator, imprint, clear terms and contact options.
-
Price & value 20 %
Price level, free-shipping threshold and how generous the coupons are.
-
Shipping 15 %
EU coverage, speed, discreet packaging, tracking.
-
Support 15 %
Reachable contact channels and how problems get resolved.
What the stamps mean
The stamp is a shortcut, not a substitute for reading the red flags.
- #1 pick
Rank 1. The shop at the top of the ranking. Read its red flags like any other shop’s.
- Top rated
Score 9.0 or higher. Strong public documentation and clear policies.
- Solid pick
8.0 – 8.9. One or two weak spots, usually transparency, price or missing facts.
- Proceed with care
Below 8.0. Something important isn’t published. Ask for it before you buy.
- No track record
No track record. The shop’s public listing has no buyer reviews yet. That is not a verdict on the shop, but nobody has reported on an order there either.
Coupons & verification
Coupon codes on PurityWatch come from shops we have an affiliate agreement with. Each has an expiry date, a minimum order where relevant and its own terms, and disappears from the site the day it expires.
If a code fails at checkout, tell us — we take it up with the shop.
Why do you ask me to verify my email?
Limited-redemption codes attract scrapers and code bots. A one-time check — a 6-digit code by email or Google sign-in — keeps them working for real buyers. One verification unlocks every code on PurityWatch for 180 days, and we email you each code you reveal.
Reader reports
Reader reports sit next to our editorial take on every shop page. Every report needs a verified email, and a person reads it before it goes live. We remove anything that looks like a shop reviewing itself, competitor sabotage, or dosing and medical claims.
Reader ratings (1–5 stars) are shown separately from the trust score, and only once a shop actually has reports.