Dual Aminos

Executive Summary

Certificate of Analysis (COA) Practices

Status: COA ✓ (third-party lab tested)

COA URL: https://dualaminos.com/coas-2/

Notes: Reviewed September 14, 2026. Dual Aminos publishes seven certificate figures on its central COA page. A complete review of all 17 product galleries found two additional certificate identities: Retatrutide 20mg and GHK-Cu 50mg. PeptidePrices retained nine complete one-page reports and matched six exact Freedom Diagnostics records. Five current rows receive exact verified controls: Retatrutide 10mg and 20mg, Tirzepatide 30mg and 60mg, and NAD+ 500mg. Tesamorelin 10mg, AHK-Cu 50mg, and GHK-Cu 50mg receive exact retained View COA controls because their reports and vials identify Dual Aminos, but Freedom Diagnostics returned no document for their printed search codes. The shared AHK-Cu and GHK-Cu code conflict remains disclosed in both viewers. The April Retatrutide 10mg report remains historical.

Rating Methodology

PeptidePrices rates vendors on a 1–10 scale using a transparent, weighted rubric:

• 40% COA practices — named third-party lab, batch-to-vial linkage, public on-site publication, testing breadth (HPLC purity, mass-spec identity, endotoxin, sterility, heavy metals)
• 20% Community reputation — Trustpilot weighted by review volume, Reddit/forum sentiment, documented red flags
• 20% Transparency — physical address, company age, ownership disclosure, contact info, domain age, return policy
• 20% Operations — shipping speed, customer-service responsiveness, payment flexibility, and dispute handling; affiliate-program performance is not scored

PeptidePrices is independent. No vendor has paid to increase their score. Full methodology at peptideprices.net/trust.