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Compare research peptide suppliers on testing transparency, customer reviews, business information and independent research.

Every score is explained factor by factor and every claim links to its source. Suppliers cannot pay to change a score or remove a review.

Information about businesses, not medical advice. We do not sell peptides.

Market snapshot

Listed prices in USD, per mg

Peptide	Suppliers	Lowest	Median	Highest
CJC-1295	28	US$3.48	US$9.00	US$1,333.13
GHK-Cu	33	US$0.03	US$0.81	US$502.50
BPC-157	34	US$0.00	US$6.00	US$833.23
MOTS-c	34	US$0.75	US$4.20	US$45.00
Tesamorelin	31	US$3.75	US$7.95	US$45.62
TB-500	33	US$0.00	US$7.00	US$20.64

Eight weighted criteria, each explained on every profile. Unknowns are shown as unknown, not as failures.

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We check business identity, domain ownership, policies and testing documentation. Verification is not a statement that any product is safe.

What the term means, what an RUO label does and does not do, and how these products differ from licensed medicines.

HPLC purity, mass spec identity, net peptide content, batch numbers and the signs of a weak or fake certificate.

In-house versus independent COAs, accreditation, which tests matter and what one result can prove.

Twelve checks on company details, testing, payment, pricing, reviews and regulator warnings.

Temperatures, light and moisture, freeze–thaw cycles and how long a reconstituted vial keeps.

What it is, how it differs from sterile water, how long an opened vial lasts and how volume changes concentration.