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About PeptideCheck

PeptideCheck exists because buying research peptides in the UK is harder than it should be: dozens of vendors, prices that only make sense once you work out the cost per milligram and add delivery, and no independent way to tell who actually sells what they say they sell.

What we do

  • Compare live prices. Every price on the site is fed directly from the vendor’s own store and ranked by £ per mg including UK delivery and any published discount code.
  • Test vendors blind. We buy as an anonymous customer and send vials to Janoshik Analytical. Results are published whether they pass or fail.
  • Verify paperwork. Vendors can publish certificates of analysis, but they only count once we have checked them on the laboratory’s own website, batch-matched to the vial.
  • Score transparently. Each vendor gets a trust score out of 100 computed from fixed, published rules. Nobody can pay to improve it.

How we are funded, and our conflict of interest

Vendors pay us the same flat commission on sales we refer, and only for customers they did not already have. That is our only income; there are no listing fees, no premium tiers and no sponsored positions inside ranked tables.

PeptideCheck is operated by Revial Labs Ltd (company number 17254123), which also sells peptides at reviallabs.co.uk. We would rather tell you than have you find out. Revial Labs is labelled Owner-operated everywhere it appears, is ranked by exactly the same formula as every other vendor, started on the same unverified footing, and is bought and lab-tested blind like everyone else. Our methodology page describes every rule we apply.

What we are not

PeptideCheck is not a shop, a pharmacy or a medical service. Everything listed is sold by UK vendors as a research chemical for laboratory use only, not for human consumption, and nothing on this site is medical, dosing or legal advice.

Talk to us

Found a wrong price, a vendor behaving badly or a certificate that does not add up? Email us from the contact page. We read everything and we fix things fast.