vialaudit
The Roundup

affiliate disclosure · We earn affiliate commission on some vendor links. Audits, scores, and rankings are independent — vendors do not pay for placement and do not see drafts. read more →

vendor matchup · audited

Modern Aminos vs Prime Research Peptides

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

§ 01

Composite score

modern-aminos

Modern Aminos

75/100

Dual US/EU peptide vendor with QR-code per-vial COAs, same-day shipping (12pm CST cutoff), 1,500+ Trustpilot reviews. Spans peptides, SARMs, nootropics. Lab identity unnamed.

Read full audit →
vs
prime-research-peptides

Prime Research Peptides

68/100

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 →
§ 02

Subscore breakdown

metricModern AminosPrime Research Peptides
composite
weighted avg
●75/10068/100○
purity / coa
●70/10060/100○
shipping
domestic days
●3.0d4.0d○
pricing
○76/10090/100●
support
●78/10065/100○
last tested
·2026-05-202026-05-09·
payment
·card, cryptocrypto, card·
§ 03

Catalog overlap

only modern-aminos
epithaloncjc-1295ipamorelinmk-677
both
mots-ctesamorelinghk-cubpc-157tb-500
only prime-research-peptides
retatrutidetirzepatidesemaglutide
read next

Other matchups

vendor matchupAscension Peptides vs Modern Aminos84/100 · 75/100vendor matchupAscension Peptides vs Prime Research Peptides84/100 · 68/100vendor matchupBioTech Peptides vs Modern Aminos76/100 · 75/100
the roundup · monthly

Receipts in your inbox. Once a month.

New audits, expired coupons pruned, lab notes from vials still on the bench. No marketing. No lifestyle copy. Unsubscribe in one click.

14,200 subscribers· 0 sponsored items· 11 issues since launch