Who actually runs the tests.

Widely described as the de-facto most-used third-party tester in the research-peptide community — while explicitly not a pharmaceutical-grade or accredited lab. Legal entity verified in the Czech business register.

Regarded within the community as a trusted US lab, often grouped with Colmaric and Janoshik. COAs signed by analyst Ken Pendarvis; documented cases of correctly flagging mislabeled samples. Reputation signals are from commercial review sites, not peer-reviewed sources.

Among the strongest independence cases: ~3,580 tests across multiple unrelated vendors plus individual-buyer submissions, and an explicit 'no vendor affiliations' self-statement corroborated by third-party review sites. Still unaccredited.

A genuinely accredited US lab; its peptide COAs are cited by vendors such as Umbrella Labs and Core Peptides. The key buyer caveat is the scope mismatch above.

A genuine small independent contract lab (food/supplement/nutraceutical focus), independent of the peptide vendor (Chemyo) that publishes its reports.

The analytical arm of BioTools, Inc. — a real instrumentation/contract-research company. Independent of the peptide vendors it serves. Peptide testing is one segment of a broad multi-industry portfolio.

Established full-service contract lab (supplement/pharma/cosmetic/food), grouped with MZ and Janoshik as a top trusted option for peptide COAs. Reputation signals from commercial review sites.

Kovera operates a real public COA verifier (~1,816 certificates), but its independence is contested: community reports allege registration/IP overlap with a vendor client and question its ~6-month-old domain, mailbox address, and lack of accreditation. These are unverified allegations — we neither vouch for nor accuse; we simply do not count it as confirmed independent evidence.

SR Biolabs LLC is a real Florida company, but we found no affirmative evidence establishing its independence from the vendors it serves, and the 'MD' credential on its COA signatures could not be verified in state records. Shown, not vouched-for.

We could not confirm Horizon Analytical is a real, independent lab. Circumstantial public records tie it to a peptide-vendor group (a shared suite address with the DIRECT PEPTIDES trademark owner; a domain registered the day after that trademark filing). No registered lab entity or accreditation was found. We do not assert it is fake or vendor-owned — only that its independence is not established.

We could not confirm SteriGenix exists as a real, independent lab. Its domain was registered ~2 months before review; the site publishes no physical address or phone; no business-registry record or any third-party/directory footprint was found. It claims to be 'ISO-17025-aligned' (not accredited), while the vendor using it markets it as 'ISO-17025 accredited' — a contradiction. Do not confuse with 'Sterigenics' (a real, unrelated sterilization company).