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Retatrutide 20mg vial

Product render, not a photograph — the vial and label are shown as supplied. Vials ship dry; no diluent is included.

GLP-1 / GIP

Retatrutide 20mg

Vial strength · 5 sizes

10 mg$10520 mg$13030 mg$14540 mg$17060 mg$195
99.97% purity

Measured by Accumark Labs

Lot CL-2609-RETA20-A

View certificate
$130 $6.50 / mg · single 20 mg vial

Bundle & save

Pick how many, then add to cart. Same product, same order. Mix-and-match bundles are here.

Sourced to order · in hand within 2 days

US shipping $20 flat, or free local pickup. Same-week local pickup across Southwest Florida and Greater Philadelphia.

View cart → How testing works →

Part of the Summer 2026 Drop. Not restocked mid-drop — the next batch is a different lot with its own certificate.

For research use only. Not for human consumption. Not approved for medical use, treatment, or diagnosis.

Specification

Compound
Retatrutide
Strength per vial
20 mg
Format
Single 20 mg vial - 2 or more for 15% off
Mass per vial
20 mg
Form
Sterile freeze-dried powder
Category
GLP-1 / GIP
Sequence
39 amino acids; Aib at 2 & 20; α-methyl-Leu13; Lys17 lipidated (C20 diacid–γGlu–AEEA); C-terminal amide
CAS number
2381089-83-2
Molecular weight
4731.3 g/mol (parent peptide)
Molecular formula
C221H342N46O68
Testing laboratory
Accumark Labs

Research context

Retatrutide (LY3437943) is a synthetic peptide developed by Eli Lilly as a single-molecule agonist of the glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon receptors.

Full Retatrutide reference — chemistry, sequence and published context →

Storage & laboratory handling

  • Supplied as a sterile freeze-dried (lyophilised) powder, sealed under vacuum.
  • Ships dry. The vial is not reconstituted, and no diluent or solvent is included or sold with it.
  • Store the unopened vial refrigerated and protected from light.
  • Allow the vial to reach room temperature before breaking the seal, to limit condensation.
  • Handle under conditions appropriate to your laboratory's protocols.

Handling guidance covers storage of the material as supplied. It is not preparation or administration guidance, and none is provided.

Verification

Retatrutide is HPLC-MS tested for identity, purity and mass by an independent laboratory before it is listed. A certificate names the lot number printed on the box, so the document and the vial in front of you refer to the same batch, and is available on request.

Certificate for lot CL-2609-RETA20-A →

Certificates on this material

2 lots tested. Superseded certificates stay published, so a vial bought on an earlier batch keeps a working link to its result.

Related materials

Common questions

What exactly is in a vial of Retatrutide 20mg?

20 mg of Retatrutide as Sterile freeze-dried powder, in a 3 mL vial, sealed and shipped dry. No diluent is included. The lot number is printed on the box.

What is the measured purity of Retatrutide 20mg?

The current lot, CL-2609-RETA20-A, measured 99.97% by HPLC-MS at Accumark Labs. Purity is the proportion of the sample that is this compound; it is not the same as how much peptide is in the vial. How to read a COA.

Does Retatrutide 20mg come with a Certificate of Analysis?

Yes - a certificate for the lot you receive is available on request. Quote the lot number printed on the box. The certificate names that lot specifically; it is never averaged across batches or reused from an earlier one.

How is Retatrutide 20mg shipped and stored?

It travels as a freeze-dried powder, which is stable in transit without a cold chain. Shipping is $20 flat anywhere in the United States, or free local pickup and delivery across Southwest Florida and Greater Philadelphia. Store the sealed vial as described on the label.

Is Retatrutide 20mg approved for human use?

No. This material is supplied to qualified researchers for laboratory use only. It is not approved by the FDA or any other regulator for human or veterinary use, and nothing on this site is guidance on use.