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The Roundup

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vendor matchup · audited

Pepspan vs Prime Research Peptides

Two audits, side by side. Composite, subscores, shipping, payment, coupons. Pepspan takes the higher composite this cycle.

§ 01

Composite score

pepspan

Pepspan

74/100

UK-registered EU-shipping peptide vendor (PEPSPAN LTD, Companies House 17144153). 13 products, Janoshik COAs claimed, 2-5 day EU delivery, no GLP-1s. Public-data preview.

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vs
prime-research-peptides

Prime Research Peptides

68/100

Aggressively priced US-listed catalog with full GLP-1 lineup (Retatrutide, Tirzepatide, Semaglutide), but the "Prime Research Peptides" brand is a hostname alias for Truform Compounds — same server, same WooCommerce instance, same page-title throughout. Editorial finding documented below. Pricing remains the strongest in our index for retatrutide on a per-mg basis; the credibility-relevant question is whether buyers know who they're actually buying from.

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§ 02

Subscore breakdown

metricPepspanPrime Research Peptides
composite
weighted avg
●74/10068/100○
purity / coa
●78/10060/100○
shipping
domestic days
●3.0d4.0d○
pricing
○72/10090/100●
support
●70/10065/100○
last tested
·2026-05-202026-05-09·
payment
·card, cryptocrypto, card·
§ 03

Catalog overlap

only pepspan
epithaloncjc-1295ipamorelinsermorelinnad-plus
both
bpc-157tb-500ghk-cumots-c
only prime-research-peptides
retatrutidetirzepatidesemaglutidetesamorelin
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