Research Peptides.
Verified Purity.
Verified research compounds, third-party tested, and same-day shipped.
Top Picks
Our most popular research peptides.
From Lab to You.
A transparent process. Verified at every step.
Average Results
LIVE
The Codex Standard
Every compound is rigorously tested to ensure the highest standards of purity, identity, and stability.
Purity is only the first checkpoint. Before any batch ships, it also clears endotoxin, HPLC, and fentanyl screening — three separate checks designed to catch what a single purity number alone can’t.
Confirms the compound’s identity using high-performance liquid chromatography, the same method used to catch synthesis byproducts.
Checks for bacterial residue left over from production — invisible and odorless, but a standard safeguard for research use.
Screens for cross-contamination from unrelated compounds, an increasingly important standard across the research chemical supply chain.
Sample COA layout — batch-specific certificates are linked via the QR code above.Every order placed before 3pm ET leaves our facility that same day. Here’s what happens between checkout and your door.
Every package ships discreet and secure — plain outer packaging with no indication of contents, fully tracked from our facility to your door.
Third-party testing means an independent lab — one with no financial stake in whether your batch passes — verifies what’s actually in the vial. That removes the conflict of interest that comes with a company grading its own work.
HPLC Identity Testing — Confirms the compound’s identity and concentration using high-performance liquid chromatography.
Endotoxin Screening — Checks for bacterial residue left over from production, invisible and odorless without lab equipment.
Fentanyl Screening — Screens for cross-contamination from unrelated compounds before a batch is ever approved to ship.
Every product we sell carries a QR code on its packaging. Scan it with any phone camera and it opens the COA page on our site — no account, no request form, no waiting on an email reply.
It leads to the COA page on our site, where published lab results are posted — it isn’t a separate, one-off page generated per vial.
Because the results come from an independent lab, not from us — you’re checking their work, not taking our word for it.
No. The COA page is open to anyone, whether you’ve ordered yet or not.
Verified From Order to Shipment.
A transparent fulfillment process built around documentation, quality control, and reliable delivery.
Order
Your order is securely received and confirmed.
Lab Verification
Batch documentation is reviewed and verified by our lab.
Quality Check
Every product is inspected, sealed, and labeled with precision.
Package and Shipped
Packed securely and dispatched with tracking provided.
Built on trust. Backed by science.
Researchers' Thoughts
Real feedback from researchers who verified their orders against the published COAs.
"The COA was listed right on the vial and matched the batch number exactly. Made verifying my results so simple. Codex is the only source I’ve used since."
"Consistent, top-notch purity on every order. I trust the transparency from Codex more than anywhere else I’ve ordered from."
"Support answered every question about testing methodology same day. Appreciate how transparent they are with the lab data."
"Shipping was fast and discreet, and the packaging kept everything sealed and tamper-evident the whole way."
Researchers' Thoughts
Real feedback from researchers who verified their orders against the published COAs.
Based on 150+ verified orders
"The COA was listed right on the vial and matched the batch number exactly. Made verifying my results so simple. Codex is the only source I've used since."
"Consistent, top-notch purity on every order. I trust the transparency from Codex more than anywhere else I’ve ordered from."
"Support answered every question about testing methodology same day. Appreciate how transparent they are with the lab data."
"Shipping was fast and discreet, and the packaging kept everything sealed and tamper-evident the whole way."
THE CODEX GUARANTEE
We only ship what we would test in our own lab.
Third-Party Tested
Every batch independently verified with full HPLC analysis.
Scannable COAs
QR code on every vial links directly to lab results.
Same-Day Dispatch
Order before 3pm ET, ships the same day, fully tracked.
Research-Grade Purity
Guaranteed ≥99% purity, batch after batch.
WHY CHOOSE CODEX RESEARCH
Always In Stock
Core research compounds ready to ship, no backorders.
Stack & Save Pricing
Automatic tiered discounts on multi-vial research orders.
Discreet, Secure Shipping
Fully tracked packaging shipped same day from the USA.
Scannable Bottle QR
Verify your exact batch results in seconds, no guessing.
Responsive Support
Real answers on dosing protocols and sourcing questions.
Purity Guaranteed
≥99% identity purity or we make it right, no questions asked.