Peptides
GLP-3 RT
From $75.00
Engineered in the dark, proven in the light
The standard for
serious research.
High-purity peptides — third-party verified and discreetly shipped. No guesswork, just documented material from a source you can trace.
99.4%
Avg. lot purity
46
Compounds in stock
24h
Same-day dispatch
The Catalog
Peptides
The Catalog
Capsules
The Onyx standard
Three promises on every order.
Independently verified
7× tested
Independently tested for purity and identity before any lot is listed — and the certificate is published for you to check.
See the certificates
Same-day dispatch
Shipped same day
In-stock orders placed before the daily cutoff ship the same business day — sealed, discreet, and tracked to your door.
Shipping details
Backed by COA
Quality Guaranteed
Every lot is guaranteed to match the certificate we publish for it — verified to spec, or we make it right.
How we testFAQ
Questions, answered.
Yes — every lot is independently tested for purity and identity before it’s listed, and the signed certificate is published for that exact lot.
Use the COA lookup to search by compound or lot number. The certificate for your exact lot is published there and lives in your account after purchase.
In-stock orders are fulfilled the same business day and ship with tracking. Expedited options are available at checkout.
Yes. Orders ship in plain, unbranded, tamper-evident packaging — nothing on the outside identifies the contents.
Products ship as a lyophilized powder — shelf-stable and sealed, no cold chain needed. For long-term storage keep lyophilized at -20°C, away from light. Per-product guidance is on each page.
No. All products are strictly for in-vitro laboratory research. They are not drugs, foods, cosmetics, or supplements, and are not for human or veterinary use.
