UK & European testing laboratories

The laboratories named on retained certificates from our UK supplier catalogue: where they are, what they test and how to check a report.

Janoshik Analytical

Czech Republic

Janoshik Analytical has the strongest visible operating history among the niche peptide laboratories reviewed: a named team, public pricing, a long report record, a widely used verifier, and a detailed 2026 facility tour. No ISO/IEC 17025 accreditation was confirmed.

  • HPLC-UV
  • LC-MS
  • NMR
  • CHNS
  • Endotoxin
  • Sterility
Retained UK reports
94 · 77 issuer-verified
UK suppliers
Corix Labs, Kensington Labs, Mr Peps, NuroLabs Research, Pureline Biolabs, Regenix Peptides, Mercia Research
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Marfleet Analytical Services

Hull, England (Wyke House, Wyke Works, Hedon Road, HU9 5NL)

A registered Hull laboratory with a published peptide menu, named directors and a dated MHRA non-compliance statement that was never shown to be lifted in public sources.

  • HPLC identity, purity and concentration
  • LC-MS (triple quadrupole) impurity profiling
  • LAL endotoxin
  • ICP-MS heavy metals
  • Bioburden screening
  • Sterility confirmation
Retained UK reports
47 · 0 issuer-verified
UK suppliers
Pure Peptides UK
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Vanguard Laboratory reports also appear in the UK archive. Its US laboratory review is available on PeptidePrices.net. Vendor-issued QA documents retain their own issuer label.