Our methodology

How We Score UK Peptide Suppliers

Every supplier is assessed against the same five weighted categories using publicly available information.

Testing & Transparency — 30%

Testing information, COA access, batch information and company transparency.

Pricing & Value — 25%

Public price, price per mg, comparable strength and stock status.

Range & Stock — 20%

Product range, research categories and current stock availability.

Delivery & Service — 15%

Dispatch information, delivery options and support information.

Website Experience — 10%

Mobile usability, navigation, product information and checkout clarity.

Last methodology update: September 2026