Peptide Source
monitored, not yet independently tested.
We do not sell or fulfil any product. This never affects rankings or scores.
Report an issue with this profileWhy this score
The score card above, in plain words. Every line comes from the data we hold on this supplier, nothing is written by hand.
Peptide Source sits at 21 out of 60. Middling. Most of the gap is reviews.
We have not lab-tested anything from them yet, so the 40 points for Lab Verification are off the table for now. What you see is built from three public signals.
Reviews: 0 of 20. We found no review record for them on the platforms we monitor.
Community: 3 of 15. Forum and Reddit talk raises serious red flags. Nobody has posted a verified review on PeptideScanner yet, so this rests on what is said elsewhere.
Transparency: 18.1 of 25. They say they provide third-party certificates of analysis. We hold 300 of them; the newest is from Oct 2025. Of the certificates we list, 5 of 20 dated ones were issued in the last 6 months.
Their own certificates against their claims: 6 of 16 measured vials are within 3% of the label (8 overfilled, 2 underfilled); 0 of 30 certificates fall below 98% purity. That earns 7.4 of the 10 points for matching claims. One certificate names no independent lab, so it is not counted here.
We watch 49 of their products. Prices last checked 9 Oct 2026.
COA availability
The supplier's own published certificate is their statement. Our independent lab result is ours. We never merge the two.
- Products with a lab certificate
- 9 of 2635%
Of the products in the table below. Any tested size counts. The certificate must come from an independent lab and test the peptide itself.
- Found on the lab's own website
- 0 of 35certificates
We look each certificate up with the lab that issued it, where the lab has a public lookup. Many labs have none, so a low number is not a bad sign.
- Contamination tests
- 4 of 35certificates
Endotoxin 4 · sterility or microbial 0 · heavy metals 0. A certificate can have more than one.
How we count this · Certificates on file as of 8 Oct 2026. They include every size and batch we hold, so there can be more certificates than products. 3 more files that look like certificates are waiting for our check and not counted.
Peptide Source states it provides third-party certificates of analysis for its products.
Certificate age. 5 of 20 dated certificates were issued in the last 6 months; 3 are over a year old. Newest: Aug 2026 (2 months old). Oldest: May 2024. 6 more have no readable date.
Claims vs COA — 10 of 16 measured vials off label.
We have not independently lab-tested any product from this supplier. No PeptideScanner result is available — this is not a negative signal, just no data yet.
Products & pricing (49)
Per-product price and $/mg for single peptides, sourced from live listings.
Community signals
A summary of public discussion — a sibling signal, distinct from our verdict and our own reviews.
documented non-delivery: BBB scam-tracker 'looked legit, no correspondence after order, refund immediately denied'; also 'fake reviews' scam claims on external review sites
Customer reviews
This supplier has 49 products tracked and is monitored — not yet independently tested. Be the first researcher to leave a review.
What the badges mean
We have independently lab-tested products from this supplier. The badge carries the test date and the named lab. Earned and rare — no supplier holds it yet.
Monitored but not yet tested by us — the default state for a supplier we are following. Trust Score capped at 60.
Documented counterfeit or non-delivery signals. Never presented as a recommendation in any sort order.
A published COA is not a badge tier. It is the supplier's own claim, shown separately above — never merged with our independent result.