For laboratory research use only — not for human consumption
Research-grade · For in-vitro research use only
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Retatrutide is a synthetic triple-agonist peptide studied in laboratory research into metabolic and receptor-signalling pathways. Supplied lyophilised for in-vitro research use only, with an independent HPLC and mass-spec Certificate of Analysis published per batch. Not for human or veterinary use.
Metabolic & receptor-signalling research
Retatrutide is a synthetic triple-agonist peptide investigated in laboratory research into metabolic and receptor-signalling pathways. It is studied for its simultaneous activity across the glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon receptor systems — the reason it appears frequently in comparative metabolic-research literature alongside single-agonist (GLP-1) and dual-agonist (GLP-1/GIP) reference peptides.
Structurally it is a 39-residue peptide (molecular formula C221H342N46O68, CAS 2381089-83-2) carrying a fatty-acid moiety that extends its half-life in solution — a feature that makes it a useful comparator in peptide-stability and receptor-pharmacology research. Its triple-receptor profile distinguishes it from the tirzepatide (dual-agonist) and semaglutide (single-agonist) reagents it is most often benchmarked against.
Gals supplies retatrutide to Australian laboratories and qualified researchers as a lyophilised powder, in 20 mg vials, each independently characterised by HPLC and mass spectrometry with a Certificate of Analysis published per batch. It is discussed strictly in an in-vitro research context and is not for human or veterinary use.
As with any research reagent, characterisation data rather than anecdote is the basis for evaluating a batch: the published COA reports purity (this batch, 99.66% by HPLC), identity by mass spectrometry, and appearance. Reported observations described in the research literature — including any adverse or off-target findings — belong to the primary studies that generated them and are not use, safety, or dosing claims made by Gals.
Supplied as a lyophilised powder in 20 mg vials. Reconstitute with bacteriostatic water (or sterile water) for laboratory preparation — the resulting concentration is the vial mass divided by the water volume, so a 20 mg vial in 2 mL gives 10 mg/mL. Add solvent gently down the side of the vial, swirl rather than shake, and store the reconstituted solution cold and protected from light; store the unreconstituted powder at -20°C. Our retatrutide reconstitution calculator works out the concentration and the volume that corresponds to any target aliquot mass.
Read the Retatrutide research overview →
For laboratory research use only. Not for human or veterinary use, consumption, or therapeutic application.
Questions
Retatrutide is a synthetic triple-agonist peptide (CAS 2381089-83-2, molecular formula C221H342N46O68) studied in laboratory research into metabolic and receptor-signalling pathways. It is characterised in the literature by simultaneous activity across the GLP-1, GIP, and glucagon receptor systems, which is why it appears as a comparator alongside single-agonist and dual-agonist reference peptides. Gals supplies it as a lyophilised powder for in-vitro research use only.
Retatrutide is not an approved therapeutic good in Australia and is not registered on the Australian Register of Therapeutic Goods. It is supplied here strictly as a laboratory research chemical for in-vitro use, not for human or veterinary use. Nothing on this page is legal advice — researchers are responsible for confirming that their intended laboratory use complies with the Commonwealth, state, and institutional rules that apply to them.
The difference is receptor coverage. Semaglutide reference material is a single agonist (GLP-1), tirzepatide is a dual agonist (GLP-1 and GIP), and retatrutide is described as a triple agonist adding glucagon-receptor activity. In comparative receptor-pharmacology research the three are used to isolate which observed signalling depends on which receptor system.
Before you order
Background reading for researchers — what this compound is, how it is positioned, and how to verify what is in the vial.
Compound profileRetatrutide research monographStructure, CAS, sequence, purity and the research areas Retatrutide is studied in.View profile →What retatrutide is, why it is of growing interest in laboratory research, and what Australian researchers should look for when sourcing it.
Read →LegalityWhere retatrutide sits as a research compound in Australia and what research-use-only supply involves.
Read →HandlingA short guide to what a Certificate of Analysis actually tells you — and what to check before you trust a vial.
Read →Frequently bought together
Bundle total
$347
Ships together · one tracked dispatch
Retatrutide is stocked in 10mg and 20mg lyophilised vials. Current pricing is shown in the buy box above, and quantity breaks reduce the per-vial cost from two vials upward. Each size is its own batch with its own published Certificate of Analysis.
This batch of Retatrutide assays at 99.66% by HPLC. Every batch is independently tested by a third-party laboratory using HPLC for purity and mass spectrometry for identity, and the Certificate of Analysis for the batch is published — you can read the actual report rather than take a number on a product page at face value.
Store the unreconstituted lyophilised powder sealed at -20°C, protected from light and moisture, and allow vials to reach room temperature before opening so condensation does not form on the hygroscopic cake. Once reconstituted, keep the solution cold and protected from light, and prepare single-use aliquots rather than freeze–thaw cycling a stock vial repeatedly.
Add bacteriostatic or sterile water gently down the inside wall of the vial and swirl until the cake dissolves — do not shake, which foams the solution and can denature peptide at the air–liquid interface. The resulting concentration is the vial mass divided by the volume added. Our reconstitution calculator does that arithmetic for any vial size and target concentration.
Yes. Retatrutide (20mg) is held in Australian stock and dispatched from our Australian facility, so there are no international customs delays. Orders placed before 12pm AEST on a business day are dispatched the same day by tracked express post, generally arriving within 1–4 business days. Free express shipping applies on orders over $300.
No. Retatrutide is supplied for in-vitro laboratory research use only and is not for human or veterinary use, consumption, or therapeutic application. It is not a therapeutic good, and no statement on this site has been evaluated by the Therapeutic Goods Administration. Purchase is limited to qualified researchers and laboratories over 18.
Customer feedback
Purity matched the published certificate. Dispatch was fast and packaging was discreet. Will order again for our research.
Dr. M. — University lab
The transparency on the COA is what sold me. Independent testing, easy to verify. Exactly what a research supplier should be.
Research customer
Consistent quality across orders. Local dispatch makes a real difference on turnaround.
Lab procurement