Retatrutide GLP-3 Vial

Retatrutide (GLP3) Vial

Price range: $59.99 through $219.99

Description

Description

Retatrutide (GLP3) Reta

Retatrutide research peptide from Frontier Peptide Labs is supplied as a lyophilized (freeze-dried) powder in 5mg, 10mg, 15mg, 20mg, 30mg, 40mg, and 50mg vial formats, intended strictly for laboratory research use. Each batch is manufactured to exceed 99% purity and verified by HPLC and LC-MS testing through an ISO 17025-accredited laboratory.

Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide studied in preclinical models as a triple agonist of the GIP, GLP-1, and glucagon receptors.

Triple GIP/GLP-1/Glucagon Agonist Triple Agonist Research 99%+ Purity Research Use Only

Mechanism of Action

Studied as a single molecule engaging three receptors — GIPR, GLP-1R, and the glucagon receptor (GCGR) — with the glucagon arm distinguishing it mechanistically from dual incretin agonists.

Vial Format

Supplied lyophilized in 5mg, 10mg, 15mg, 20mg, 30mg, 40mg, and 50mg strengths. Requires reconstitution in bacteriostatic or sterile water before laboratory use.

Research Resources

Browse the Research Library and Research Guides.

About the Retatrutide Research Peptide

Retatrutide is built on the GIP peptide backbone and carries a C20 fatty diacid moiety that promotes albumin binding and extends circulating half-life. Unlike tirzepatide, which engages two receptors, retatrutide was engineered for agonism at three: GIPR, GLP-1R, and GCGR. Relative potency differs across the three receptors rather than being balanced; the reported values are given in the primary literature. In diet-induced obese rodent models described by Coskun and colleagues (Cell Metabolism, 2022), chronic administration produced dose-dependent reductions in food intake and body weight. The glucagon receptor component is associated in that work with increased energy expenditure, a contribution not available to dual GIP/GLP-1 agonists. Published phase 2 clinical literature in humans also exists; Frontier Peptide Labs supplies this material solely as a laboratory research reagent and makes no claim regarding human outcomes.

Read the full research summary on Retatrutide →

Quality & Testing

Every Retatrutide batch is manufactured to exceed 99% purity and tested using HPLC and LC-MS protocols through an ISO 17025-accredited laboratory, confirming identity, potency, and batch-to-batch consistency. A batch-specific Certificate of Analysis is available on request — see Reading a Certificate of Analysis for how to interpret the chromatograms.

Handling & Storage

Retatrutide Research FAQs

What is Retatrutide?

Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide studied in preclinical research as a triple agonist of the glucose-dependent insulinotropic polypeptide receptor (GIPR), the glucagon-like peptide-1 receptor (GLP-1R), and the glucagon receptor (GCGR).

Why is Retatrutide sometimes called GLP-3?

GLP-3 is an informal supplier and research-community shorthand referring to retatrutide as the third-generation successor to GLP-1 and dual GIP/GLP-1 agonists. It is not a formal receptor name or an official designation, and it carries no human-use meaning.

How does Retatrutide differ from Tirzepatide?

Tirzepatide is a dual GIP/GLP-1 receptor agonist. Retatrutide adds a third target, the glucagon receptor, for triple-receptor agonism. See the Retatrutide vs. Tirzepatide comparison for the full mechanistic breakdown.

What vial strengths are available for Retatrutide?

This product is supplied in 5mg, 10mg, 15mg, 20mg, 30mg, 40mg, and 50mg lyophilized vials.

How is Retatrutide purity verified?

Each batch is manufactured to exceed 99% purity and tested by HPLC and LC-MS through an ISO 17025-accredited laboratory. HPLC evaluates the separation profile and purity; LC-MS confirms molecular identity. A batch-specific COA is available on request.

Is Frontier Peptide Labs Retatrutide for research use only?

Yes. It is intended exclusively for laboratory research and development purposes. It is not for human consumption, veterinary use, diagnostic use, cosmetic use, therapeutic application, or medical treatment.

Research Use Only: This product is intended exclusively for laboratory research and development. It is not for human consumption, veterinary use, diagnostic use, cosmetic use, therapeutic application, or medical treatment. Purchasers are responsible for compliance with all applicable federal, state, and local regulations.

Additional information

Strength

5mg, 10mg, 15mg, 20mg, 30mg, 40mg, 50mg

FDA Disclosure: The statements on this website and the products sold herein have not been evaluated by the U.S. Food and Drug Administration (FDA). These products are not intended to diagnose, treat, cure, or prevent any disease. Products sold are for Research Use Only and are not for human or animal use.

Intended Purpose: Products sold on this site are intended solely for basic laboratory research, pharmaceutical research, or the development of new tests. They are not intended for diagnostic, therapeutic, or clinical use.

Handling and Storage Tips:

  • Keep peptides cold and away from light once received.
  • For short-term use (days to weeks), refrigeration at 4°C (39°F) is acceptable.
  • Lyophilized peptides are typically stable at room temperature for several weeks, making it suitable for moderate-term storage.
  • For long-term storage (months to years), it’s best to freeze peptides at -80°C (-112°F). Freezing optimally preserves peptide stability for extended periods.

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"RUO" is an abbreviation for Research Use Only. It is a designation used primarily by the FDA (Food and Drug Administration) for products, often in vitro diagnostic (IVD) components like reagents or instruments, that are in the laboratory research phase of development and are not intended for clinical diagnostic use.

Peptide Purity, Identity Verification & Assay Testing

Understanding peptide purity testing is essential when evaluating research peptide materials, lyophilized powders, capsules, tablets, and liquid spray formulations. At Frontier Peptide Labs, quality control is built around accurate analytical testing, peptide identity verification, assay testing, and transparent laboratory standards.

Peptide Purity Testing

Purity is most accurate when evaluating raw peptide materials, isolated compounds, and lyophilized research powders.

Identity Verification

Peptide identity verification confirms that the correct peptide or research compound is present in the tested material.

Assay Testing

Assay testing verifies peptide content, concentration, and label accuracy for finished formulations such as capsules and sprays.

What Does Peptide Purity Really Mean?

When evaluating research peptide products, understanding what peptide purity really means is essential. The term purity is most accurate when applied to raw peptide materials, isolated compounds, or lyophilized peptide powders where a single active compound is measured against potential impurities.

In this context, analytical methods such as HPLC peptide analysis and LC-MS verification can help evaluate purity, identity, molecular characteristics, and research material consistency. These testing methods are commonly used in research peptide quality control to support accurate and transparent laboratory documentation.

Why Finished Peptide Products Require More Than Purity Testing

For finished peptide products such as peptide capsules, tablets, or liquid peptide sprays, the word “purity” can be misleading when used by itself. These formulations often contain additional ingredients such as stabilizers, binders, fillers, carrier solutions, or excipients that support the final product format.

Because of this, purity alone does not always provide a complete or scientifically meaningful picture of product quality. A finished capsule or spray should be evaluated using testing metrics that confirm both the identity of the peptide and the amount of peptide present in the final formulation.

Key Testing Metrics for Research Peptide Quality Control

Testing Metric What It Confirms
Peptide Identity Verification Confirms the correct peptide or research compound is present in the tested material.
Assay / Content Testing Verifies that the amount of peptide per capsule, vial, tablet, or spray matches the product label.
HPLC Analysis Evaluates separation profile, purity, and analytical consistency for peptide research materials.
LC-MS Verification Supports molecular identity confirmation and analytical characterization.

ISO 17025 Accredited Laboratory Testing

To maintain a high level of quality assurance, Frontier Peptide Labs products are tested by an ISO 17025-accredited analytical laboratory. ISO 17025 accreditation is an important standard for laboratory competence, testing accuracy, method validation, traceability, and reliable analytical data.

This testing approach helps support consistency, transparency, and reliable documentation across research peptide vials, peptide capsules, liquid peptide sprays, and research compound formulations.

Why This Matters for Researchers

Modern research peptide quality control should go beyond simple marketing claims. By focusing on peptide identity verification, assay testing, HPLC analysis, LC-MS verification, and ISO 17025 laboratory testing, researchers can better evaluate product consistency and label accuracy.

This approach provides more actionable data for research environments and helps ensure that the results associated with a peptide product are scientifically relevant, transparent, and appropriate for laboratory research use.

Explore More Research Resources

Learn more about research peptide quality control, peptide purity testing, HPLC peptide analysis, LC-MS verification, peptide storage guidelines, and laboratory handling through Frontier Peptide Labs educational resources.

Browse Research Guides Explore Research Library

Research Use Only: All peptide and research compound products sold by Frontier Peptide Labs are intended exclusively for laboratory research and development purposes. These materials are not for human consumption, veterinary use, diagnostic use, cosmetic use, therapeutic applications, or medical treatment. Certificate of Analysis (COA) for this batch is available on request. Email [email protected] with your order number to receive a copy. COAs include HPLC purity analysis performed by an independent third-party laboratory.

Certificate of Analysis for Retatrutide (GLP3) Vial

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