Every lot tested.
Every COA published.
High-purity research peptides, assayed by an independent lab before they ship. The certificate goes up with the batch — you never have to ask for it.
UHPLC-MS assay by BioRegen
Dr. Victor Ugur, Analytical Chemist
What you get with every order
Three assays. One certificate.Published with the lot.
Every batch is tested by an independent laboratory before a single vial is listed — and the full certificate is posted against the batch number, not sent on request.
- ✓Purity & identity — UPLC-MSConfirms identity by mass and retention time, and reports purity as a percentage.
- ✓Endotoxin — kinetic chromogenic LALRun on an Endosafe nexgen-PTS and reported in EU/mL against specification.
- ✓pH — potentiometricRead in triplicate and reported with temperature against specification.
LP-TIR-09
Better pricing, without a sale
Buy more, save more
The discount counts vials of the same compound — every size of it adds up. Applied automatically at checkout, no code.
Found it cheaper? We beat it by 5%
Send us the listing before you order. If that supplier publishes a certificate of analysis dated within the last six months, we beat their price by 5%.
Submit a price matchThe compounds researchers reorder
Shop by research area
Every compound in the catalogue, grouped by the models it is studied in.
22 compoundsGLP-1
Metabolic and GLP-1 receptor researchShop now →
22 compoundsTissue Repair Research
Tissue and cellular repair modelsShop now →
20 compoundsMusculoskeletal Research
Musculoskeletal and performance researchShop now →
14 compoundsMulti-Peptide Blends
Pre-combined multi-peptide formulationsShop now →
10 compoundsDermal & Neuroendocrine Research
Dermal and neuroendocrine pathwaysShop now →From lot to bench
Sourced and lotted
Material is received, assigned a lot number, and held before any of it is listed for sale.
Sent out for analysis
A sample goes to BioRegen for purity, endotoxin and pH. The certificate is published against the lot and names the analyst.
Dispatched within 24 hours
Orders placed before 2pm ET on a business day ship the same day, tracked and discreetly packed, from New York.
Before you order
No. Every compound sold here is supplied strictly for laboratory and research use. Not for human or veterinary use.
BioRegen, an independent laboratory. Legion does not test its own product, and the analyst who signs each certificate is named on it.
Every product page links the certificate for the lot you are buying. You can also browse all of them from the lab results page.
Within 24 hours for orders placed before 2pm ET on a business day, tracked and discreetly packed from New York.
Send a photo. We ship a replacement at no cost and you do not need to return the original.
It counts total vials in your cart across any compounds, and applies automatically at checkout. No code needed.
A real person answers.
Questions about a compound, a certificate or an order in flight — whichever way you reach us, you get a person, not a ticket number.
(1-855-853-4466)Mon–Fri, 9am–6pm ET✉Emailinfo@legionpeptides.comReplies within one business day
Or send us a message
Franklin Square, New York · we reply within one business dayElite Research Compounds. Trusted Verified.
🇺🇸 Made in the USA. Lab-Tested. Delivered with Precision.
Discover a curated selection of high-purity research peptides each batch backed by transparent lab results and exceptional customer service.
Target Identification
COA with every purchase
100% Secure Checkout
Purity. Precision. Performance
Lab-Tested. USA-Made. Trusted
Legion Peptides Products
Transparent pricing
No markup. Third-party HPLC on every lot.
Volume pricing
Enjoy exclusive savings on curated peptide bundles — designed for efficiency, value, and consistent research performance.
Order protection
Encrypted checkout, tracked shipment, replacement policy.
Technical support
U.S.-based. Storage, handling, and COA questions.
Receptor Research Compounds
Compounds supplied for receptor-signaling and other in-vitro research applications.
Musculoskeletal Research Compounds
Sequences supplied for laboratory study within musculoskeletal research models.
How Our Research Supply Process Works
We independently lab-test every batch to confirm ≥99% purity, free from contaminants, solvents, and heavy metals. Each order is securely packaged in a sterile environment and shipped same-day from within the United States.
Latest news
Redefining Research Purity — One Vial at a Time
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