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GLP-3 RT (also written GLP3RT, GLP-3-RT, RT peptide, GLP3-RT, or by its INN Retatrutide) is a triple agonist research peptide targeting GLP-1, GIP, and glucagon receptors. Each batch ships with a third-party Certificate of Analysis confirming HPLC purity and mass spectrometry identity. For laboratory and in-vitro research only.
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Research Use Only. This product is intended solely for laboratory research purposes. Not for human or veterinary use. Not for food or cosmetic use. By purchasing, the buyer agrees to use this product only for research applications.
Third-Party Tested
Independent lab verification
COA Available
Certificate of Analysis included
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On all domestic orders
Research Use Only
For laboratory research purposes
GLP-3 RT is a triple-receptor agonist compound targeting GLP-1, GIP, and glucagon receptors.
10mg Vial
GLP-3 RT is a research peptide for laboratory investigation of GLP receptor pathways. Each vial contains 10mg of lyophilized peptide for research purposes only. Third-party tested with Certificate of Analysis (COA) available. Purity: >99%. COA Batches: MPRT001, MPRT003, Midw2512080004.
20mg Vial
GLP-3 RT is a research peptide for laboratory investigation of GLP receptor pathways. Each vial contains 20mg of lyophilized peptide for research purposes only. Third-party tested with Certificate of Analysis (COA) available. Purity: >99%. COA Batches: MPRT001, MPRT003, Midw2512080004.
GLP-3 RT is a precision-formulated research compound produced under standardized manufacturing protocols with batch-level consistency and quality control verification. Each unit is supplied in sealed packaging designed to support stability during transit and storage when handled according to provided guidelines.
Research teams can integrate GLP-3 RT into established protocols with confidence, supported by documented production standards, clear labeling, and dependable supply continuity. Minimizing exposure to excess heat, moisture, and light helps maintain consistency across evaluation periods.
This product is intended strictly for in-vitro laboratory research and analytical applications conducted by qualified research personnel or institutions. It is not for human or veterinary use and must not be used as a drug, food additive, cosmetic, or household item.
This compound is sold for research and educational purposes only. It has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease.
By purchasing this product, you confirm that you are a qualified professional conducting lawful scientific research. Midwest Peptide and its affiliates are not liable for any misuse or mishandling of this material.
GLP-3 RT is a research peptide also known as retatrutide, a synthetic 39-amino-acid triple agonist that activates the GLP-1, GIP, and glucagon receptors. It is the most-recently developed molecule in the GLP receptor agonist class and is supplied strictly for Research Use Only.
Yes. GLP-3 RT and retatrutide refer to the same molecule. GLP-3 indicates its position in the receptor agonist class (single GLP-1, dual GLP-1/GIP, triple GLP-1/GIP/glucagon), and retatrutide is the international nonproprietary name. Both names map to the identical sequence.
GLP-3 RT activates three receptors (GLP-1, GIP, glucagon) while GLP-2 TZ activates two (GLP-1, GIP). The added glucagon-receptor activity of GLP-3 RT is associated in research with stronger effects on energy expenditure, hepatic lipid handling, and metabolic rate.
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Research articles and insights related to GLP-3 RT

Why retatrutide outperforms single and dual incretin agonists in preclinical research models comes down to the glucagon receptor component, energy expenditure, and integrated metabolic axis engagement.
May 5, 2026

Tirzepatide and retatrutide differ in receptor count and downstream pharmacology. This research-context comparison covers mechanism, body composition, and how to choose between them.
May 5, 2026

Researchers can buy retatrutide (GLP-3 RT) through the Research Use Only research peptide market. The molecule is not FDA approved, but RUO suppliers ship batch-verified material for laboratory work.
May 5, 2026

Retatrutide is still in clinical development. The way researchers obtain GLP-3 RT for preclinical work is the Research Use Only supply chain, where COA-verified material is sold for laboratory studies.
May 5, 2026
Research Use Only. These products are not supplements, drugs, or intended for human or veterinary use. These products are for laboratory research purposes only. All product information available on this website is for educational purposes only. The products offered on this website are not intended to diagnose, treat, cure, or prevent any disease. Bodily introduction of any kind into humans or animals is strictly forbidden by law. This material is sold for in-vitro research purposes only.
GLP-3 RT is used in preclinical research on triple-agonist incretin pharmacology, energy expenditure and thermogenesis, hepatic lipid metabolism, body composition partitioning, and glucose homeostasis. All cited studies are conducted in rodent or in-vitro systems.
Every batch of GLP-3 RT ships with a third-party COA verifying purity by HPLC (>=99%), identity by mass spectrometry, and lyophilized mass. The batch-specific COA is published on this product page before purchase.
Lyophilized GLP-3 RT is stored at -20C for long-term storage and 2-8C for short-term use within 30 days. Avoid repeated freeze-thaw cycles. Store in original sealed vials, protected from light.
Retatrutide remains in clinical development as of 2026 and is not yet FDA-approved. The GLP-3 RT supplied here is for laboratory and research use only, and is not approved for diagnostic, therapeutic, or human use.