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Free shipping on orders $200+Order by 8:30 PM EST · ships next business dayEvery lot third-party testedCOA published for every lotResearch use only · not for human or veterinary use
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Every lot third-party tested

Research, without the guesswork.

Independent analysis. Transparent documentation.

  • COA with every lot
  • Ships next business day
  • Free shipping on orders $200+
Every lotthird-party tested before release
COA onlinepublished for every lot
Next daydispatch when you order by 8:30 PM EST
2-dayshipping on every order
New · Build your own kit

Pick 10+ vials. Save 20%.

Mix any vials and sizes, repeats included, and keep adding past 10 at the same price.

Your kit · 8/10 20% off every vial

2 more to finish your kit

Scan it. Trust it.

Every vial carries its own proof.

The QR on each label opens that exact lot’s lab report. Pick a vial and see what a scan shows.

Or browse every report
SCAN FOR COAPEPTIDE A 10MGLOT PI-A-001RESEARCH USE ONLY
Lab report found
Lot PI-A-001 · XX.XX% purity
Open lab report →
SCAN FOR COAPEPTIDE B 5MGLOT PI-B-002RESEARCH USE ONLY
Lab report found
Lot PI-B-002 · XX.XX% purity
Open lab report →
SCAN FOR COAPEPTIDE C 30MGLOT PI-C-003RESEARCH USE ONLY
Lab report found
Lot PI-C-003 · XX.XX% purity
Open lab report →

Best sellers

The compounds researchers reorder most. Prices update live.

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Scan · Verify · Trust

Every vial has its own QR code

Scan the code on your label and it goes straight to the certificate of analysis for that vial’s lot.

  • Use your phone camera, no app needed
  • Opens the report for that exact lot
  • No label handy? Find it in the COA library

The Purity Index standard

What happens to every lot before it is released. Nothing ships until it is done.

  1. Sent to an outside lab

    Every lot is tested by an independent lab before release.

  2. Purity measured by HPLC

    Purity is reported on each certificate. Add your target here.

  3. Identity confirmed

    The lab confirms the compound matches the label. The method is listed on each COA.

  4. Report published

    The full COA goes live for that lot. Add any extra tests you run.

Open the COA library

Why researchers come back

Clean materials, published data, and pricing without games.

  • Research-first

    Clearly labeled compounds for laboratory work, never marketed as anything else.

  • Tested on arrival

    Materials are re-tested when they land here. Edit to match what you actually do.

  • Bulk-friendly pricing

    Multi-vial deals so labs can stock up.

  • Transparent pricing

    Multi-vial discounts apply automatically. Nothing to hunt for.

  • Fast, tracked shipping

    Order by 8:30 PM EST and it ships the next business day with tracking.

  • Real support, 7 AM to 8 PM EST

    Order or payment issue? Email us and get a human answer.

Questions, answered

What are peptides?

Peptides are short chains of amino acids used in laboratory research. Everything here is intended strictly for laboratory research, not for human or animal consumption.

What does “research use only” mean?

Every product is intended solely for laboratory research. By ordering, you confirm you are a qualified researcher and will handle materials lawfully in a controlled lab setting.

Do you provide a certificate of analysis?

Yes. Reports are published for you to view, no request needed. Find them in the COA library.

How should research materials be stored?

Storage guidance comes with each product. Add your own notes here.

How quickly do orders ship?

Orders placed before 8:30 PM EST ship the next business day. Free shipping over $200.

Every compound we carry, in one place

Held in US inventory, with the certificate of analysis for every lot published online.

Independently testedEvery lot, verified
COAs publishedViewable anytime
Free 2-day shippingOn orders over $200
Research use onlyNot for human use

PURITY INDEX

US-based research peptide supplier. For laboratory research use only.

Support

  • you@example.com
  • Hours: 7 AM – 8 PM EST
  • Location: United States

For research use only. Not for human or veterinary use. These statements have not been evaluated by the U.S. Food and Drug Administration. Products are not intended to diagnose, treat, cure or prevent any disease. No medical, dosing or usage advice is provided.

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