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Research-grade · Documented · 21+

Peptides withnothing to hide.

Independently tested to 99% purity. Every lot ships with its full Certificate of Analysis — published openly, matched to the vial in your hand.

Browse catalog → Read our COAs
99%purity guaranteed
100%public COAs
2-Daycold-chain
open book researchGLP-3 (RT)10MGPURITY 99% · RESEARCH USE ONLY
open book researchGLP-1 (SM)10MGPURITY 99% · RESEARCH USE ONLY
open book researchGHK-Cu50MGPURITY 99% · RESEARCH USE ONLY
Every lotCOA · Public
open book researchCJC / Ipa5/5MGPURITY 99% · RESEARCH USE ONLY
open book researchTB-50010MGPURITY 99% · RESEARCH USE ONLY
The Open Book guarantee

Completely open about our testing. Always.

No purity claims you can’t check yourself — that’s the whole point of the name.

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Independently tested

Every lot verified by an unaffiliated U.S. analytical lab — independent HPLC analysis of identity, purity, and net content.

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COA with every lot — public

The full lab report is published on this site. Match your lot number, read the record.

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99% purity, guaranteed

If a vial ever fails to match its published COA, we replace it or refund it.

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Cold-chain, discreet, tracked

FedEx 2-Day in insulated, gel-packed, plain packaging. Free over $250.

The catalog

Every vial, documented.

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Free cold-chain shipping on every order over $250
Free shipping at $250
Buy by the supply

Curated research stacks.

Popular compounds paired into a full supply — bacteriostatic water included.

All stacks →
Most popularSummit research stack
Summit
GLP-3 (RT) 30MG + GHK-Cu + GLOW
◆ Bacteriostatic water included
✦ SHIPS FREE — OVER $250
$363.97 $320
Save 12%
StarterApex research stack
Apex
CJC-1295 / Ipamorelin + Tesamorelin
◆ Bacteriostatic water included
$144.98 $130
Save 10%
Best valueMeridian research stack
Meridian
GLP-3 (RT) + MOTS-C
◆ Bacteriostatic water included
$124.98 $110
Save 12%
Evergreen research stack
Evergreen
NAD+ + Epithalon + GHK-Cu
◆ Bacteriostatic water included
$163.98 $144
Save 12%
Metabolic Max research stack
Metabolic Max
GLP-3 RT + MOTS-C + NAD+
◆ Bacteriostatic water included
✦ SHIPS FREE — OVER $250
$324.97 $286
Save 12%
Why researchers switch

The Open Book difference.

Most peptide vendors ask for your trust. We publish the evidence and let you check it yourself.

What you get
Open Book
Typical vendor
Full COA published for every lot
◆ Public, always
On request, if at all
Purity standard
99% guaranteed
Unstated or varies
Third-party testing
Unaffiliated U.S. lab
In-house or none
Failed-COA policy
Replace or refund
Store credit, maybe
Shipping
Cold-chain, FedEx 2-Day
Padded envelope
Buyer verification
21+ · RUO only
None
Comparison reflects common practices across research-peptide vendors. All Open Book products are for laboratory research use only.
See the certificates →
Questions

Everything, on the record.

How do I verify the purity of my vial?+
Every label carries a lot number. Find that lot on our Certificates page and you’ll see the complete third-party Certificate of Analysis — identity, purity, and net content, exactly as the laboratory reported it.
What does 99% purity guaranteed actually mean?+
Every compound we sell is verified at 99% purity or higher by independent HPLC analysis before it’s listed. If a vial ever fails to match its published COA, we replace it or refund it.
Who tests your compounds?+
An unaffiliated, U.S.-based analytical laboratory. We never self-grade: no lot reaches our shelf without an independent report, and that report is what we publish.
How are orders shipped?+
Cold-chain by FedEx 2-Day: insulated packaging with gel packs, in plain, discreet boxes with full tracking. Orders over $250 ship free.
Who can purchase?+
Qualified researchers and institutions, 21 or older. Everything we sell is strictly For Research Use Only — laboratory reagents for in-vitro research, not for human or animal use of any kind.
What if something arrives damaged?+
Contact us with your order number and we’ll make it right — replacement shipped cold-chain, at our cost.
Create your research account

Join the researchers on the record.

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Built for verified researchersQualified researchers only · every lot documented

One account for everything — order history, your lots’ COAs in one place, subscribe-and-save, and first access when new lots publish.

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Free · takes 30 seconds · 21+ verified researchers only
Every lot’s COA — public