vialauditThe Roundup

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VENDOR MATCHUP · AUDITED

CertaPeptides vs Prime Research Peptides

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

Composite score

HIGHER COMPOSITE
78
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.

READ FULL AUDIT
vs
68
OF 100
VENDOR AUDIT

Prime Research Peptides

Aggressively priced US-listed catalog with full GLP-1 lineup (Retatrutide, Tirzepatide, Semaglutide), but the "Prime Research Peptides" brand is a hostname alias for Truform Compounds — same server, same WooCommerce instance, same page-title throughout. Editorial finding documented below. Pricing remains the strongest in our index for retatrutide on a per-mg basis; the credibility-relevant question is whether buyers know who they're actually buying from.

READ FULL AUDIT

Subscore breakdown

7 METRICS
METRIC
CERTAPEPTIDES
PRIME RESEARCH PEPTIDES
Composite · weighted avg
78/100
vs
68/100
Purity / COA
82/100
vs
60/100
Shipping · domestic days
3.0d
vs
4.0d
Pricing
80/100
vs
90/100
Support
70/100
vs
65/100
Last tested
2026-06-23
vs
2026-05-09
Payment
sepa, paysera
vs
crypto, card

Catalog overlap

ONLY CERTAPEPTIDES
cagrilintideipamorelinepitalonnad-plusss-31selankmelanotan-25-amino-1mq
BOTH
semaglutidetirzepatideretatrutidebpc-157tb-500ghk-cumots-c
ONLY PRIME RESEARCH PEPTIDES
tesamorelin

Other matchups

ALL COMPARISONS →
VENDOR MATCHUP
Ascension Peptides vs CertaPeptides
84/100 · 78/100OPEN →
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Ascension Peptides vs Prime Research Peptides
84/100 · 68/100OPEN →
VENDOR MATCHUP
BioTech Peptides vs CertaPeptides
76/100 · 78/100OPEN →
THE ROUNDUP · MONTHLY

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