• Retatrutide
  • Retatrutide
  • Retatrutide
  • Retatrutide
  • Retatrutide
  • Retatrutide
  • Retatrutide
  • Retatrutide

Retatrutide

$90.00
$90.00
Sale Sold out
Shipping calculated at checkout.
  • 99.79% (Janoshik Labs, third-party HPLC)
  • Janoshik Task #137638 · Batch CS-re10-0322 · 10mg vial
Size: 2mg

In stock

99%+ purity guarantee · Free express shipping to the US & Europe

Retatrutide — research peptide (LY3437943)

Retatrutide is a synthetic peptide that acts as an agonist at the GIP, GLP-1 and glucagon receptors. It is used in laboratory and preclinical research on incretin and glucagon receptor signalling.

  • Form: lyophilized (freeze-dried) powder in a sealed glass vial
  • Quality: every batch is third-party tested by HPLC before release. The batch reference and purity are shown above; full reports are in our COA library.
  • Storage: keep the sealed vial in a cool, dry place away from light; store frozen for long-term storage.

For laboratory research use only. Not for human or veterinary use.

Our Purity Promise

Every batch of Peptonia peptides is third-party lab tested before it ever reaches you. We stand behind that testing completely — so much so that we back it with a full money-back guarantee.

If you send your product for independent lab testing and it does not verify at 99%+ purity, we will refund your order in full, and we'll also cover the cost of your lab test.

That's how confident we are in what we sell. No hoops, no fine print — just clean, verified peptides, guaranteed.

Store lyophilized (unreconstituted) vials in a freezer at -20°C for long-term storage, or refrigerated at 2-8°C for short-term storage (up to several weeks), protected from light. Once reconstituted with bacteriostatic water, refrigerate at 2-8°C and use within 14-30 days for best stability. Avoid repeated freeze-thaw cycles and direct sunlight. For research use only — reconstitution and storage should follow standard laboratory protocols.

This product is sold strictly for laboratory research use only. It is not intended for human or animal consumption, ingestion, injection, or any other in vivo use, and it is not a drug, dietary supplement, or cosmetic. By purchasing, you certify that you are 18+, purchasing as or on behalf of a qualified researcher or institution, and that you assume full legal responsibility for compliance with your local laws. See our full Legal Notice and Terms of Service for details.
Research Essentials
BAC water
BAC water
$10.00
$10.00
Retatrutide
Retatrutide
$90.00
$90.00
Tesamorelin
Tesamorelin
$20.00
$20.00
Retatrutide
Retatrutide
$90.00
$90.00

HPLC Testing

Endotoxin Assay

TAMC Test

Trusted BY

Our Peptide

Cheap vendors
Third-party lab-tested, every batch Yes Rarely
Certificate of analysis included Yes, with every order On request only, if at all
Purity verified at 99%+ Yes Unverified
Sourcing transparency Full disclosure Often disclose
Batch-to-batch consistency Yes Inconsistent
Proper cold-chain shipping Yes Rarely
Money-back purity guarantee Yes No
Reconstitution support Included Not offered

ADVANCED SUPPORT FOR YOUR RESEARCH GOALS

Peptonia offers a carefully selected range of research peptides covering key areas of biological and scientific investigation.

Longevity & Healthy Aging

✓ Included

Cognitive Research

✓ Included

Energy & Mitochondrial Research:

✓ Included

Muscle & Performance Research:

✓ Included

Metabolic Research:

✓ Included

Recovery & Skin Research:

✓ Included

Immune & Inflammation Research:

✓ Included

Sexual Health & Fertility Research:

✓ Included

Research-grade peptides • Quality-focused • Laboratory research only

Everything You Need to Know!

Frequently Asked Questions

Yes. Every batch is independently tested by Janoshik Labs, a third-party lab specializing in peptide analysis. We publish the purity percentage and batch reference for every product, so you're never relying on our word alone

Yes. Each product page lists its batch reference and lab summary — email us your order number and we'll send the full Janoshik Labs report for the batch you received.

 Research chemicals are legal to purchase in most countries when bought and used strictly for laboratory research, but rules vary by country, state, and region. These products are not for human or animal use — see our Terms of Service and Legal Notice for full details.

Store unreconstituted vials in a freezer at -20°C for long-term storage, or refrigerated at 2-8°C for a few weeks, protected from light. Once reconstituted with bacteriostatic water, refrigerate at 2-8°C and use within 14-30 days.

Yes, we ship to the US, the UK, the EU, Norway, Switzerland and Indonesia, except to destinations where research chemicals are restricted by local law. Every order ships in plain, unmarked packaging for your privacy.

Email support@peptonia.com within 7 days of delivery with your order number and photos — once verified, we'll send a free replacement at no cost to you.