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VENDOR MATCHUP · AUDITED

CertaPeptides vs Peptide Partners

Two audits, side by side. Composite, subscores, shipping, payment, coupons. CertaPeptides takes the higher composite this cycle.

Composite score

HIGHER COMPOSITE

OF 100

VENDOR AUDIT

CertaPeptides

EU-based (Romania) research-peptide supplier that does the thing our rubric rewards — real third-party Janoshik COAs hosted on Janoshik's own public portal, with verifiable report IDs, real compound names, and an honest two-tier split between "independently tested" lots and "supplier batch specification" lots. The main caveats are scope and age — only about a third of the catalog has an independent report (the rest is a supplier ≥98% class spec, not a per-lot measurement), and the operation is new despite a "founded 2024" claim. Public-data preview; first-hand audit pending.

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OF 100

VENDOR AUDIT

Peptide Partners

32 Kovera vial reports at a 99.83% median purity, three Kovera fails its own ledger omits, and open FDA warning letter 735063. Public-data audit, 50/100.

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Subscore breakdown

7 METRICS

METRIC

CERTAPEPTIDES

PEPTIDE PARTNERS

Composite · weighted avg

78/100

50/100

Purity / COA

82/100

68/100

Shipping · domestic days

3.0d

4.0d

Pricing

80/100

78/100

Support

70/100

45/100

Last tested

2026-06-23

2026-10-09

Payment

sepa, paysera

card, wire

Catalog overlap

ONLY CERTAPEPTIDES

cagrilintideipamorelinnad-plusselankmelanotan-25-amino-1mq

BOTH

semaglutidetirzepatideretatrutidebpc-157tb-500ghk-cumots-cepitalonss-31

ONLY PEPTIDE PARTNERS

tesamorelin

Other matchups

ALL COMPARISONS →