SYS · ONLINE│PASS · 63.0%
Open Assay
Independent Testing / Est. 2026
BATCH04·26·B
PASS63.0%
N27
#3

Peptide Partners

Composite79.7BPRELIM · N = 9how we rank ↗
peptide.partners

Third-party testing

Publishes COAs
Third-party lab
Multiple (HPLC, LAL endotoxin, heavy metals, sterility)
Batch-specific COAs
Verification codes

Four categories of published third-party testing. Company has published its own investigative pieces on counterfeit COAs in the category, suggesting editorial alignment with a Wirecutter-style review site.

Strengths

Testing-forward brand with 59 Finnrick submissions, four categories of published QC (HPLC, LAL, heavy metals, sterility). Company blog has published investigative critiques of COA fraud — unusually aligned with our editorial approach.

Concerns

Affiliate terms are not publicly disclosed and require direct negotiation. Smaller operation than market-leader peers.

Cited third-party COAs

Publicly published results from Finnrick / Janoshik / Freedom, cited with attribution. Do not feed our ranking formula directly, but inform the narrative.

We do not have an active affiliate arrangement with Peptide Partners. The supplier's site is linked at the top of this page for reference; we earn nothing if you buy there.