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The Roundup

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vendor matchup · audited

Pepspan vs Summit Biotech

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
summit-biotech

Summit Biotech

55/100

Operator received an FDA warning letter on December 10, 2024 as "Summit Research Peptides," then rebranded to Summit Biotech without disclosing the prior identity on the new site. Login-walled catalog, code-name SKUs for the FDA-cited compounds, and the cheapest per-mg pricing in our seven-vendor index on Tirzepatide, Retatrutide, and Semaglutide. ~90% of COAs are real Janoshik public-database links.

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§ 02

Subscore breakdown

metricPepspanSummit Biotech
composite
weighted avg
●74/10055/100○
purity / coa
●78/10070/100○
shipping
domestic days
●3.0d5.0d○
pricing
○72/10095/100●
support
●70/10040/100○
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 summit-biotech
retatrutidetirzepatidesemaglutidetesamorelincagrilintide
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