AmericanPeptide doesn’t sell Sermorelin. It ranks where to get it by one thing: the provenance tier of each vendor’s purity claim. A vendor that publishes an independent, per-batch COA backs a third-party claim; one that only states its own number backs a vendor-reported one. Same scale as the rest of the site — the Standard.
Ranked by the tier of each vendor’s purity claim, strongest first; within a tier, by transparency score. We show every source and do not average purities across vendors — a median across a third-party COA and a self-reported number is a figure belonging to neither. The paid partner, where present, is disclosed at its honest tier, not pinned above it.
Publishes a third-party, per-batch COA you can match to your specific lot.
Amino Club
US research-peptide distributor; every batch ships a lot-matched third-party COA (MZ Biolabs / Janoshik) at ≥99% HPLC purity.
COAs are independently verifiable via the Janoshik / MZ Biolabs report number on each certificate — confirm the report for your specific lot. 60-day money-back guarantee; change-of-mind returns are excluded.
States third-party testing or COAs — not yet independently confirmed here.
ABSIM Peptides
Featured partner · paidUS research-peptide supplier publishing a certificate of analysis on every product listing; cGMP-compliant manufacturing, free US shipping over $200.
Checkout requires an account; returns are accepted within 7 days with photos.
Affiliate disclosure. AmericanPeptide does not sell peptides. This is an independent third-party vendor, and we may earn a commission if you register or buy through this link — at no extra cost to you. Listing and ranking are based on published transparency signals, never on commission; where a card is labeled “Featured partner,” that placement is paid, and it buys position rather than a better score.