Buy 1, get the matching vial free on every peptide, auto-applied in cart Free U.S. shipping, every order Orders placed before 2 pm ET ship same day

U.S. research peptides · lot-level testing

Research peptides with the paperwork to prove it.

Every vial we ship is tied to a lot you can look up. Independent HPLC purity, mass-spec identity and net-content reports sit one click from every product, before you ever reach checkout.

  • Third-party HPLC + MS
  • COA for every lot
  • Free U.S. shipping
  • Real support, U.S. hours
Example certificate of analysis Pass
BPC-157 · 10mg
Lot
WV-24-0917
Method
RP-HPLC, 220 nm
Tested
Sep 17, 2026
Purity (HPLC)
99.2%
Identity (LC-MS)
1,419.6 Da · confirmed
Net content
10.1 mg
Endotoxin
< 0.5 EU/mg

Illustrative layout. Open any product to view the live report for its current lot.

Standing offer

Buy one vial.
The matching vial is free.

Add any peptide and a second vial of the same compound and size goes in your cart at no charge. No code, no minimum. Supplies and reconstitution kits are the only exclusions.

Shop BOGO compounds

How to verify a vial

Three steps from the label on your vial to the report behind it.

We publish reports per lot, not per product. That means the document you read describes the exact batch in your hands, including the date it was tested and the lab that tested it.

Read our laboratory standards
  1. 1

    Find the lot number

    It is printed on the vial label and on your packing slip.

  2. 2

    Open the COA library

    Search by compound, size or lot. Each entry opens the original PDF from the testing laboratory.

  3. 3

    Check three numbers

    Purity by HPLC, mass by LC-MS against the expected molecular weight, and net peptide content.

Full catalog

All research compounds

40 products · prices per vial · BOGO applies to every peptide

Metabolic

SLU-PP-332

ERR pan-agonist (small molecule)

from $68.00 500mcg · 60 capsules · 2 sizes · 2 for 1
View COA
Recovery

KPV

α-MSH C-terminal tripeptide

$63.00 10mg · 2 for 1
View COA
Recovery

ARA-290

Cibinetide · EPO-derived helix-B peptide

$65.00 10mg · 2 for 1
View COA
Longevity

SS-31

Elamipretide · mitochondria-targeted tetrapeptide

$49.00 10mg · 2 for 1
View COA
Cognitive

SEMAX

ACTH(4–7)-Pro-Gly-Pro heptapeptide

$29.95 10mg · 2 for 1
View COA
Cognitive

SELANK

Tuftsin-derived anxiolytic heptapeptide

$63.00 10mg · 2 for 1
View COA
Cognitive

DSIP

Delta sleep-inducing peptide

$40.99 10mg · 2 for 1
View COA
Growth Hormone

MK-677

Ibutamoren mesylate (small molecule)

$99.00 12.5mg · 60 capsules · 2 for 1
View COA
Skin & Aesthetic

PT-141

Bremelanotide · MC4R-selective analog

$29.99 10mg · 2 for 1
View COA
Stacks

KLOW

GHK-Cu 50mg + KPV 10mg + BPC-157 10mg + TB-500 10mg

$99.99 80mg · 2 for 1
View COA

Why researchers order here

Clear before checkout, not after.

Independent testing

Lots are tested by third-party analytical labs, never in-house. Reports are published unedited.

Same-day dispatch

Orders before 2 pm ET leave the same business day in insulated, discreet packaging with cold packs where needed.

Cold-chain storage

Lyophilized stock is held at −20 °C from receipt to dispatch, with temperature logs available on request.

A person answers

Email or call during U.S. business hours. Shipping issues are resolved with a replacement, not a form.

Helpful information

Frequently asked questions

More answers on the full FAQ page.

How does Buy 1, Get 1 free work?

Add any peptide to your cart and we add a second vial of the same compound and size at no charge. Every two vials of a product count as one paid and one free, so 2 vials cost the single-vial price, 4 vials cost double, and so on. The free vial is applied automatically in the cart, and the saving is shown on its own line.

Which products are excluded from BOGO?

Bacteriostatic water and the reconstitution kit. Everything else in the catalog, including the blended stack vials, qualifies.

Can I combine BOGO with a discount code?

No. BOGO is already the best price on every vial, so promo codes do not stack with it.

Where do I find the COA for my vial?

Open the COA Library and search by compound or by the lot number printed on your vial label. Each entry links to the original laboratory PDF. Product pages also link straight to the report for the lot currently shipping.

What do the COA numbers mean?

Purity (HPLC) is the percentage of the sample that is the target peptide. Identity (LC-MS) confirms the measured mass matches the expected molecular weight. Net content is the actual peptide mass in the vial. Endotoxin, where tested, is reported in EU per mg.

How much is shipping and when will my order arrive?

Shipping within the United States is free on every order. Orders placed before 2 pm Eastern on a business day ship the same day; most deliveries arrive in 2 to 4 business days. Tracking is emailed as soon as the label is scanned.

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