Independence & methodology
How We Score Vendor Evidence
PeptidePrices is independent. We are not owned by any peptide vendor, lab, or reseller. We aggregate publicly available pricing and publish evidence scores using transparent criteria. A score summarizes the evidence we reviewed; it is not a guarantee of product quality, safety, or suitability.
Our commitments
- No vendor has ever paid us to increase their score. Ever.
- We disclose affiliate relationships everywhere they appear. When we earn commission from a vendor click, we say so on the vendor page, in the footer, and in our about page.
- Affiliate status has zero weight in the score. Partner communication may help us locate evidence, but only evidence that can be independently verified counts. Non-partners are not penalized for providing less access.
- Commercial placement stays labeled and separate. Coupon modules and the optional "Discount Code" sort may feature partners; default quality and price ordering do not.
- Scores update as evidence changes. A new batch of complaints or a failed lab test drops the score immediately, partner or not.
- We publish our methodology openly so you can challenge it, including the page you're reading right now.
- We never sell or publish your search history, email, or watchlist data.
The vendor evidence score
Each vendor gets a 1–10 evidence score composed of four weighted factors, heavily favoring verifiable lab testing:
How we summarize compound safety evidence
PeptidePrices does not assign a numeric compound safety score. Compound pages summarize four evidence areas:
- Clinical literature — depth and phase of published human/preclinical research (peer-reviewed sources, ClinicalTrials.gov).
- Adverse-event reporting — documented side-effect and tolerability signals in the literature.
- Regulatory status — FDA/EMA status, warning letters, investigational-vs-approved status. See the PeptidePrices FDA warning-letter storefront census for a source-linked enforcement dataset.
- Compound profile — class, mechanism, and known interactions/contraindications.
These pages describe the available evidence and its limits. They do not determine whether a compound is safe for an individual. Affiliate relationships do not change the evidence summary.
Why scores change
Vendor scores are not static. A vendor that was rated 8/10 six months ago can drop to a 4/10 today if a wave of customer complaints appears on Reddit or if a batch fails an independent lab test. We review scores quarterly, and we push emergency updates whenever material evidence surfaces.
New vendors often begin with limited evidence regardless of their marketing claims. A low score is not an accusation; it records the evidence available under the rubric at the time of review.
Found a mistake?
Prices change. Vendors go offline. New reviews surface. If you find incorrect data, email us and we will update the site immediately.
support@peptideprices.net