Is GLP-3 RT the same as retatrutide?

GLP-3 RT is Velora Research’s branded supply of retatrutide, the triple-receptor agonist also known by the developmental code LY3437943. Each vial is verified for identity and purity through independent third-party HPLC and mass spectrometry.

Can I buy retatrutide for human use?

No. Retatrutide has not been approved by the FDA for any therapeutic use as of 2026. GLP-3 RT is sold by Velora Research strictly for in vitro and preclinical research conducted by qualified laboratories and research professionals. Purchasers confirm research-use-only intent at checkout.

What is the retatrutide price at Velora Research?

GLP-3 RT is priced at $81 for a 10mg vial and $170 for a 30mg vial, with the 20mg size priced at checkout. The retatrutide price per milligram is lowest at the 30mg tier, which is why most repeat-protocol researchers select that size. Free US shipping on orders over $200.

How is GLP-3 RT verified?

Every batch is independently tested by a third-party analytical laboratory using high-performance liquid chromatography (HPLC) for purity and mass spectrometry for identity confirmation. The Certificate of Analysis is published on /coas/ and linked from the product page by batch number, so each vial can be traced to its specific test report.

How should I store GLP-3 RT?

Store the lyophilized vial sealed at -20°C in a dry, dark environment until reconstitution. Once reconstituted with bacteriostatic water, refrigerate at 2-8°C and use within the stability window established by the research protocol. Avoid repeat freeze-thaw cycles, which can degrade peptide integrity.

How does retatrutide compare to tirzepatide?

Tirzepatide is a dual-receptor agonist of GLP-1 and GIP. Retatrutide adds a third receptor target — glucagon — and in published Phase 2 trials it produced the largest mean weight reductions observed to date in the incretin class. Both are supplied by Velora Research as research peptides only.

Do you ship retatrutide internationally?

Velora Research accepts international orders for laboratory research use only. Buyers are responsible for ensuring compliance with all applicable local, state, and national regulations in their jurisdiction prior to purchasing.

GLP-3 RT

Name: GLP-3 RT
Brand: veloraresearch.com
Availability: InStock

About GLP-3 RT (retatrutide research peptide)

GLP-3 RT is Velora Research’s branded supply of retatrutide, a synthetic 39-amino-acid peptide that has been studied as the first triple-receptor agonist of GLP-1, GIP, and glucagon. Researchers buy retatrutide in lyophilized form for in vitro and preclinical investigations into metabolic regulation, lipid handling, and energy-expenditure pathways.

Every vial of GLP-3 RT is manufactured under documented production protocols and independently verified by a third-party laboratory using high-performance liquid chromatography (HPLC) and mass spectrometry. The Certificate of Analysis for each batch is published on our site and linked directly from the product page so qualified researchers can confirm identity, purity, and molecular integrity before placing the compound into a study.

Mechanism of action — what the published research describes

Retatrutide (LY3437943, originally developed by Eli Lilly) is a long-acting fatty-acid-conjugated peptide that engages three incretin and metabolic receptors simultaneously:

GLP-1 receptor — the same target as semaglutide and the GLP-1 component of tirzepatide; observed in published research to influence glycemic regulation pathways.
GIP receptor — shared with the second component of tirzepatide; described in preclinical literature as contributing to nutrient-handling pathways.
Glucagon receptor — the receptor unique to retatrutide among current incretin-class research peptides; described in published trial data as contributing to energy-expenditure pathways.

Published Phase 2 readouts (NEJM 2023; ClinicalTrials.gov NCT04881760) reported the largest mean body-weight reductions observed to date in incretin-class trials at peak dose, while open-label Phase 3 work in the TRIUMPH program is ongoing. GLP-3 RT is supplied solely as a research compound to support in vitro mechanism studies, receptor-binding assays, and preclinical models — it is not intended for and is not legal to use in humans or animals.

Key specifications:

Attribute	Specification
Research name	GLP-3 RT (retatrutide research peptide)
Developmental name	LY3437943
Receptor activity	Triple agonist — GLP-1, GIP, glucagon
Available sizes	10mg, 20mg, 30mg
Form	Lyophilized white powder
Purity	≥99.0% (HPLC verified)
Molecular formula	C316H481F3N94O101
Molecular weight	~6758.22 g/mol
Storage	Lyophilized: -20°C, sealed, dark, dry. Reconstituted: 2-8°C, use within research-protocol window.
Verification	Independent third-party HPLC + mass spectrometry per batch
COA access	Batch-specific COA published on /coas/ and linked to product page

Available sizes & retatrutide price

GLP-3 RT is available in three vial sizes so researchers can match purchase volume to study scope without overstocking a single batch:

Vial size	Price (USD)	Best for
10mg	$81.00	Pilot studies, receptor-binding assays, single-protocol pilots
20mg	Listed at checkout	Multi-arm preclinical work, repeat-dose protocols
30mg	$170.00	Long-running protocols, multi-lab studies, cost-per-mg efficiency

The retatrutide price per milligram drops at the 30mg tier, which makes the larger vial the typical choice for studies running longer than a single pilot. All GLP-3 RT orders over $200 ship free within the United States via 2-day delivery; international orders are accepted in accordance with applicable research regulations.

Why qualified researchers buy retatrutide from Velora Research

Vendor selection in the research-peptide space is a trust problem, not a pricing problem. Five things separate Velora Research from the field:

Batch-level third-party COA. Every lot is verified by an independent analytical lab using HPLC and mass spectrometry; the COA is downloadable from the product page and tied to the batch number printed on the vial.
≥99% HPLC-verified purity. Identity, purity, and molecular integrity are confirmed before any batch is released for sale.
Documented production protocols. Lyophilized under controlled conditions, sealed in inert atmosphere, traceable from synthesis through shipment.
US-based 2-day shipping with cold-chain handling. Free over $200, with all orders processed within 1–2 business days.
Compliance-first sales policy. Sales are restricted to qualified laboratories, institutions, and research professionals. Every order acknowledges the research-use-only terms prior to checkout.

Reconstitution & storage guidance (research use)

GLP-3 RT ships as a lyophilized powder. For in vitro studies, researchers typically reconstitute with bacteriostatic water (0.9% benzyl alcohol) at a concentration that fits the assay protocol. A common pilot ratio for a 10mg vial is 2 mL of BAC water, yielding a 5 mg/mL solution — adjust per your study design.

Pre-reconstitution: store sealed at -20°C in a dry, dark environment. Avoid freeze-thaw cycles.
Post-reconstitution: refrigerate at 2-8°C and use within the stability window established by the study protocol.
Handling: always reconstitute and aliquot in sterile lab conditions with appropriate PPE.

Velora Research supplies bacteriostatic water as a separate product. Please refer to the published peer-reviewed literature for protocol-specific reconstitution and handling parameters.

Retatrutide vs. tirzepatide vs. semaglutide — research-context comparison

Researchers evaluating GLP-3 RT for purchase often compare it to other incretin-class peptides. Summary of how the three differ at the receptor level, drawn from published trial readouts:

Attribute	Semaglutide	Tirzepatide	Retatrutide (GLP-3 RT)
Receptor targets	GLP-1	GLP-1, GIP	GLP-1, GIP, glucagon
Class	Single-receptor agonist	Dual-receptor agonist	Triple-receptor agonist
Trial stage (as of 2026)	Marketed	Marketed	Phase 3 (TRIUMPH program)
Reported peak weight reduction in trials	~14-15%	~20-22%	~24% (Phase 2 peak dose)
Half-life	~7 days	~5 days	~6 days
Dosing in research literature	Weekly	Weekly	Weekly

Figures are drawn from published preclinical and clinical literature and are provided strictly for research-context comparison. GLP-3 RT is supplied as a research peptide for in vitro and preclinical investigation only — not as a therapeutic product.