Suppliers that accept cryptocurrency. Convenient for some buyers, but it gives up chargeback protection, so weigh it against the quality and trust scores on the same card.
A long-running supplier that takes cards, ships internationally and knows how to publish a proper lot-numbered certificate, then stopped doing so in 2023.
Same score as everywhere else, filtered by one fact.
A long-running supplier that takes cards, ships internationally and knows how to publish a proper lot-numbered certificate, then stopped doing so in 2023.
Some of the most traceable batch certificates in this group, from a company that will not tell you its address, phone number or name.
A capsule-heavy research-chemical store with one of the larger public lab-results pages in this group and a purity refund you could actually claim, carrying an FDA warning letter from December 2024 and a returns policy that excludes peptides and adds fees.
Open certificates from two named laboratories and free US shipping with no minimum, on a mixed SARMs-and-peptides catalog that carries a 2021 FDA warning letter, files its certificates by date rather than lot, and has no returns policy at all.
A UK SARMs-first shop with budget peptide prices, a real street address and phone, card payment and a 14-day money-back window.
A budget-tier Chinese direct supplier with crypto-only checkout, a Janoshik verification route and a long file of Finnrick-documented warnings, from lookalike domains to a forum ban for doxxing a customer.
Extreme Peptides has traded since 2010, answers a phone, takes card, Bitcoin and ACH and ships free from $99.
American Research Pens describes a thorough testing program and had not published a single lot certificate when we checked, while charging about twice what a comparable pen supplier does.
The main Atomik Labz site refused to load for us, and the sister storefront that did load shows prices, a crypto discount and not a single certificate, laboratory name or address.
Enhanced Peptides is easy to order from, with free shipping on every US order and three ways to pay, and impossible to audit, because its 99%+ HPLC claim comes with no certificate, no laboratory and no report.
A mixed research-chemical retailer with an FDA warning letter from September 2025, a middling independent testing record reported by Finnrick, and a website we could not load to confirm a single claim.
Peptide Pros, at 6.5 out of 10, with Peptide Warehouse next at 6.3. Editorial scores from a published formula, not user reviews.
We filter the full scored list by one fact that appears on each supplier’s own pages. Nothing is reweighted for the category; the score is the same one you see everywhere else here.
Every supplier on this list sells materials labeled for laboratory research use only. We score suppliers, their documents and their policies, and we do not describe or endorse any other use.
