Peptide Partners
Pirsek Technologies (Florida). Deepest testing transparency in the set: four test categories (HPLC purity, USP endotoxin, heavy metals, sterility), batch-searchable COA database with direct PDF links and multiple named labs (TrustPointe, BioRegen, Kovera, Chromate). Finnrick-verified 99.8% median purity (8.2-8.3/10 overall, 9.7/10 purity) across 73 samples; transparent per-mg pricing ($3.60-4.80 BPC-157).
Score breakdown
Strengths
- Four distinct third-party test categories — deepest documentation found
- Batch-traceable COA DB with direct PDFs; warns against certificate fraud
- Finnrick-verified 99.8% median purity, 4.8/5 satisfaction across 25 reports
- Competitive wholesale $/mg + free shipping over $400; US domestic (FL)
Weaknesses
- No customer reviews shown on product pages (social proof hidden)
- No public affiliate program — channel monetization locked out
- No blog/educational hub; no on-site price-per-mg calculator (math left to buyer)
How we rank
One formula, the same for every vendor including our partner. Argue with the weights — that's the point.
Overall = 0.40 × Transparency + 0.30 × Purity + 0.15 × Shipping + 0.15 × Value
Peptide Partners: 0.40×9.5 + 0.30×9.5 + 0.15×7.5 + 0.15×8 = 9.0
How each axis is scored
Transparency (×0.4). COA depth, named third-party labs, breadth of test types (HPLC base; +MS, +LAL, +heavy metals, +sterility), public batch traceability. Claim-only purity (no hosted PDF) caps this axis.
Purity (×0.3). Median/recent batch purity from hosted COAs + independent lab confirmation (Finnrick/Janoshik). Self-reported '99%+' with no batch PDFs scores low.
Shipping (×0.15). US-domestic speed/reliability and stock consistency from real shipping data; international-only or undisclosed scores lower.
Value (×0.15). Purity-adjusted price per mg vs the cross-vendor median for the same peptide/vial; discount-dependency penalized.
Reviews
Why trust this comparison
- Every vendor is scored from real evidence on four public, weighted axes — before we know any margins.
- Purity claims are cross-checked against named third-party labs (MZ Biolabs, Finnrick, Janoshik). Claim-only purity is marked as such.
- The scoring code can't read which vendor pays us — the editorial-commerce firewall is enforced in software.
- We disclose the 20% / 10% Alpha Pro commission on every page, above the first link.
Vendors out-rank our own partner: Peptide Partners (9.0) and Protide Health (8.9) and Ascension Peptides (8.8) both score above Alpha Pro (8.6). We left it that way.