vialauditThe Roundup

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VENDOR MATCHUP · AUDITED

CertaPeptides vs Particle Peptides

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

Composite score

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.

vs
HIGHER COMPOSITE
84
OF 100
VENDOR AUDIT

Particle Peptides

EU-based vendor with the deepest catalog-COA surface in our cohort and a clear methodology improvement curve from 2024 to 2025+. 2024-vintage Apigenex-tested batches show a content-vs-label gap (70–80% measured content on label-stated quantities); 2025+ Liquilabs assays meet label. Carries Retatrutide under the alias "GLP-3" — buyers searching for retatrutide may not realise.

Subscore breakdown

7 METRICS
METRIC
CERTAPEPTIDES
PARTICLE PEPTIDES
Composite · weighted avg
78/100
vs
84/100
Purity / COA
82/100
vs
85/100
Shipping · domestic days
3.0d
vs
4.0d
Pricing
80/100
vs
90/100
Support
70/100
vs
80/100
Last tested
2026-06-23
vs
2026-05-09
Payment
sepa, paysera
vs
crypto

Catalog overlap

ONLY CERTAPEPTIDES
semaglutidetirzepatidecagrilintideipamorelinepitalonnad-plusss-31selankmelanotan-25-amino-1mq
BOTH
retatrutidebpc-157tb-500ghk-cumots-c
ONLY PARTICLE PEPTIDES
aod-9604

Active coupons

No active coupon for CertaPeptides this cycle.
10% off
Particle PeptidesPARTICLE10

10% off, stackable with bulk

USE CODE

Other matchups

ALL COMPARISONS →
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