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Editorial Reference / Independent Laboratories

Labs Directory

Independent third-party laboratories that test peptide vials supplied by outside vendors. Editorial only — we sell nothing and accept nothing for these listings.

How this list is built

A laboratory is listed here when three conditions are met: it tests peptides directly for outside customers, it publishes enough methodology detail that a buyer can match the lab's scope against what they need, and inclusion is editorial — we have no commercial relationship with any laboratory listed and accept nothing in return for the listing.

Listing is not a recommendation of any specific test result, and the directory does not replace verifying a laboratory's current accreditation, scope, and methods against the laboratory's own documentation. Where accreditation is claimed, see the ISO 17025 article for what verification involves.

Indexed laboratories

Janoshik Analytical

Visit Lab Site ↗
Country
Czech Republic
Accreditation
Independent commercial laboratory; specific accreditation scope not publicly listed at time of review.

Methods

  • Reversed-phase HPLC purity
  • Mass spectrometry identity
  • Quantitation by HPLC against reference standards

Editorial note

A frequent point of reference in the research-peptide community for independent third-party testing of peptide vials supplied by outside vendors. Customers ship the vial to the lab; the lab returns purity by HPLC and identity confirmation by mass spectrometry on a per-sample basis. Pricing and turnaround are set per-test and listed on the lab's own site. Inclusion here is editorial; labowned has no commercial relationship with the lab, no affiliate arrangement, and receives nothing for naming them. Verify the current scope of any test against the lab's own documentation before commissioning.

Entry reviewed: 2026-05-19

What's still missing

This directory is intentionally small at launch. We would rather list one laboratory whose methodology we've actually traced than ten we've only seen named in forum posts. Entries are added when we've reviewed the lab's published methodology against the inclusion criteria above. If a laboratory you use is missing, the most useful response is to send the lab's URL and a pointer to the methods documentation we should review.