The testing laboratories
Who actually runs the tests.
Every certificate names a lab. Here is what we could verify about each one — whether it’s a real, independent third-party lab, whether it holds accreditation (and whether that accreditation even covers peptides), and how much evidence flows through it. We only call a lab “independent” when we’ve confirmed it. Everything is sourced; naming a lab is never an endorsement.
Horizon Analytical
United States (Texas, reported)
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.
Certificates here
2
Vendors here
1
Accreditation
No accreditation on record
SteriGenix Analytical
United States (claimed, no address published)
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).
Certificates here
1
Vendors here
1
Accreditation
No accreditation on record
Accreditation is not a rubber stamp.
ISO/IEC 17025 is method- and scope-specific: a lab can be genuinely accredited for food microbiology or heavy metals and still run its peptide purity tests outside that accredited scope. Where that’s the case, we say so. Most peptide-market labs hold no accreditation at all and operate as harm-reduction services — useful, but not regulatory-grade QC. We report what each lab can and can’t back, and we never repeat a vendor’s accreditation claim as fact.