Best suppliers that ship internationally

Koi Peptides has a lot-searchable certificate library, two US warehouses and a retest-and-refund promise, which is most of what a lab buyer wants.

BioLongevity Labs documents its testing better than most, names three outside laboratories and keeps an open batch library with endotoxin reports.

Evolve Peptides names three laboratories, shows lot-specific certificate and endotoxin images on the product page and backs purity with a 200 percent guarantee.

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.

Nexaph gives kit buyers a low per-vial price, a named laboratory and a live review profile, and cannot decide whether it is a US facility or a Shanghai company.

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 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.

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.

A registered UK company trading since 2012, with budget GBP prices and card checkout, that openly declines to use third-party laboratory testing.

Direct Peptides offers the widest format range and the longest shipping reach in our index, backed by the thinnest testing record: one certificate image from 2023 with no lot and no laboratory, no published address, and no returns.

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.

Amino Asylum is a relaunched storefront that publishes no owner, address, phone, email, laboratory name or example certificate, and that says its predecessor closed after an FDA enforcement action.

Some of the lowest prices in this group and next-day Royal Mail delivery, attached to a storefront that names no laboratory, no company, no email and no phone, takes bank transfer only, and has lost its Trustpilot profile.

There is nothing to evaluate from outside: no public catalog, certificates, legal entity or address, and the company reserves the right to refuse you as a member.