Retatrutide Starter Kit

Retatrutide Starter Kit — Research Peptide + Lab Supplies Bundle

The Retatrutide Starter Kit pairs one 10mg vial of lyophilised Retatrutide with the sterile consumables needed to reconstitute it: a 3mL vial of bacteriostatic water, five 1mL insulin syringes and two alcohol swabs. Retatrutide, developed under the code LY3437943, is a synthetic 39-amino-acid peptide built on a glucose-dependent insulinotropic polypeptide (GIP) backbone and engineered as a single molecule that activates three receptors: GIP, GLP-1 and glucagon. Researchers search for this bundle as a retatrutide kit, reta starter kit or retatrutide bundle, and the peptide is often shortened to reta.

Retatrutide is studied mainly for body-weight regulation in obesity models, glycaemic control in type 2 diabetes models and reduction of liver fat, with a Phase 3 clinical program under way. At the receptor level it is a triple agonist: GIP and GLP-1 receptor signalling is associated with glucose-dependent insulin release and reduced food intake, while glucagon receptor activation is linked to hepatic fat oxidation and energy expenditure, so the three pathways are investigated together.

Omega Peptides Australia supplies the Retatrutide in this kit as a high-purity (≥99% HPLC), COA-verified lyophilised powder, dispatched same day from within Australia on orders placed before 12pm, with the batch Certificate of Analysis published in the COA library.

What is included

• 1 × Retatrutide 10mg vial, lyophilised powder in a sealed sterile vial, ≥99% HPLC purity with a batch COA, $159.99 separately.
• 1 × 3mL bacteriostatic water, sterile water with 0.9% benzyl alcohol preservative for reconstitution and multi-draw stability, $14.99 separately as the 3mL Bacteriostatic Water vial.
• 10 × 1mL insulin syringes, sterile, individually sealed, fixed-needle U-100 syringes, $15.99 separately as the 1mL Insulin Needles 5 Pack.
• 2 × alcohol swabs, individually sealed, for wiping vial septa before each puncture. Not sold separately.

Key research areas

• Body-weight regulation Retatrutide was investigated in a 48-week Phase 2 obesity trial published in 2023 and is now the subject of the multi-trial Phase 3 TRIUMPH program. The proposed mechanism combines reduced food intake through GLP-1 and GIP signalling with increased energy expenditure through the glucagon receptor.
• Glycaemic control A separate Phase 2 program in type 2 diabetes, published in 2023, examined glucose-lowering alongside weight change, and Phase 3 diabetes trials have followed. GIP and GLP-1 receptors both potentiate glucose-dependent insulin secretion.
• Hepatic fat and liver research A Phase 2a substudy published in 2024 measured liver-fat change in participants with fatty liver, reflecting interest in glucagon receptor activity on hepatic lipid metabolism, and further liver-directed trials are under way.
• Cardiovascular and comorbidity models The Phase 3 program includes studies in obesity with established cardiovascular disease, obesity with knee osteoarthritis and a large cardiovascular outcomes trial.
• Triple-agonist receptor pharmacology In-vitro work characterises how one peptide balances activity across three receptors. Retatrutide shows its greatest relative potency at the GIP receptor, and comparison with dual agonists such as Tirzepatide is an active line of research. Its C20 fatty diacid binds serum albumin, giving a plasma half-life of roughly six days.

Why these are supplied together

Retatrutide is supplied as a lyophilised cake, so nothing can happen in a research model until it is brought into solution. Bacteriostatic water is the recommended diluent: it dissolves the peptide cleanly, adds no salts or buffers, and its 0.9% benzyl alcohol keeps the reconstituted vial bacteriostatic across repeated draws over 28 days. Because Retatrutide is studied at low concentrations, a single 10mg vial is reconstituted once and sampled many times.

The syringes and swabs close the loop. Fixed-needle 1mL syringes graduated in 0.01mL units measure the diluent going in and the aliquots coming out, while the swabs decontaminate the septa. A 3mL diluent vial covers a 10mg vial at any common reconstitution volume, five syringes cover the reconstitution draw and four aliquots, and two swabs cover both septa. Longer studies suit the two-vial Retatrutide Premium Kit, which includes 10mL of water and ten syringes.

Specifications

Available sizes and pricing

The Starter Kit is a single fixed configuration built around one 10mg vial. Purchased individually, the three priced components come to $190.97 (Retatrutide 10mg $159.99, 3mL bacteriostatic water $14.99, 5 pack of syringes $15.99), so the kit price of $189.99 matches that total with the two alcohol swabs included at no extra cost. The peptide works out to about $16.00 per mg. Laboratories needing more material should compare the Retatrutide Premium Kit at $329.99 for two 10mg vials.

• Retatrutide Starter Kit, $189.99 (1 × 10mg vial, about $16.00 per mg of peptide, plus lab supplies)

Quality and COA verification

Every batch of Retatrutide supplied by Omega Peptides Australia is independently tested by Janoshik Analytical, with HPLC purity and mass spectrometry identity confirmation reported on a Certificate of Analysis, and each batch document is published in the COA library so the vial in the kit can be matched to its result. The peptide is lyophilised for stability and sealed in a sterile vial that stays closed until the first reconstitution draw. The bacteriostatic water is sterile-filled under a tamper-evident cap, the syringes are individually sealed with capped needles, and the swabs are sealed in sachets. The kit is packed for domestic transit, protected from light and heat.

Frequently bought together

• Retatrutide Premium Kit, $329.99, two 10mg vials with 10mL bacteriostatic water and ten syringes for longer studies.
• Bacteriostatic Water (10mL), $29.99, a larger diluent vial for laboratories reconstituting several peptides.
• 1mL Insulin Needles (10 Pack), $19.99, extra sterile syringes for extended sampling.
• GHK-Cu (50mg), $89.99, a copper tripeptide for skin and tissue research models.

Research guides

• Retatrutide research guide
• Where Australian researchers source Retatrutide
• Retatrutide vs Tirzepatide
• Peptide storage guide: how to store lyophilised peptides properly
• COA testing explained for research peptides in Australia
• Peptide reconstitution calculator
• Certificate of Analysis library

Frequently asked questions

What is in the Retatrutide Starter Kit?
The kit contains one 10mg vial of lyophilised, COA-verified Retatrutide, one 3mL vial of bacteriostatic water, five 1mL sterile insulin syringes and two alcohol swabs. Everything needed to reconstitute the vial and draw measured aliquots over 28 days arrives in one order, with the batch COA in the COA library.

What is Retatrutide?
Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide built on a GIP backbone and modified with a C20 fatty diacid so it binds albumin and circulates for days. It is a single-molecule agonist at the GIP, GLP-1 and glucagon receptors, investigated in obesity, type 2 diabetes and liver-fat models.

Do I need bacteriostatic water and syringes?
Yes. Retatrutide is supplied as a dry lyophilised powder and must be dissolved before it can be used in any in-vitro model. Bacteriostatic water is the recommended diluent because its preservative keeps the reconstituted vial usable across repeated draws, and fine-scale 1mL syringes measure the diluent and the small aliquots accurately.

How much do I save with the bundle?
The kit is priced at $189.99 against $190.97 for the Retatrutide 10mg vial, 3mL bacteriostatic water and 5 pack of syringes bought separately, so the saving is about a dollar, with the two alcohol swabs, which are not sold on their own, included free. The main value is a single verified order ready to reconstitute.

Can I buy the items separately?
Yes. Retatrutide is listed on its own in several vial sizes, bacteriostatic water is available in 3mL and 10mL vials, and the 1mL insulin needles come in 5 and 10 packs. Alcohol swabs are not listed separately, so the kits are currently the only way to include them.

Can I buy Retatrutide at Chemist Warehouse or a pharmacy in Australia?
No. Retatrutide is an investigational compound that has not been approved by the TGA and is not listed on the Australian Register of Therapeutic Goods, so Chemist Warehouse, Priceline and other pharmacies do not stock it. Omega Peptides Australia supplies the lyophilised research-grade compound strictly for laboratory use.

Can Australian compounding pharmacies supply Retatrutide?
Compounding pharmacies may only prepare a medicine for an individual patient on a valid prescription under Pharmacy Board standards, and Retatrutide is an unapproved investigational compound rather than a registered medicine, so it is not a standard compounding item. Research suppliers such as Omega Peptides Australia supply the lyophilised research compound for laboratory use only.

How do you reconstitute Retatrutide?
Swab both septa, draw the planned volume of bacteriostatic water into a syringe and add it slowly down the inside wall of the Retatrutide vial rather than onto the powder. Swirl gently until clear, never shake, then label the vial, refrigerate at 2–8°C and use within 28 days.

How should Retatrutide be stored?
Keep the lyophilised vial at 2–8°C for short-term storage or −20°C for long-term storage, protected from light and moisture, and avoid repeated freeze-thaw cycles. Once reconstituted, keep the solution refrigerated at 2–8°C and use it within 28 days. The bacteriostatic water and syringes are stored at room temperature with seals intact.

Where can I buy the Retatrutide Starter Kit in Australia?
Omega Peptides Australia holds the kit in domestic stock and dispatches same day on orders placed before 12pm, with tracked delivery Australia-wide and a batch COA for the peptide. It sits alongside the other COA-verified compounds in the research peptides collection, so related peptides can join the same order.

What does the Retatrutide Starter Kit cost in Australia?
The kit is $189.99 for one 10mg vial of Retatrutide, about $16.00 per mg, with 3mL bacteriostatic water, five syringes and two swabs. The Retatrutide Premium Kit is $329.99 for two 10mg vials with 10mL of water and ten syringes, a lower effective cost for laboratories needing more material.

How do I get the Retatrutide Starter Kit online in Australia?
Add the kit to the cart on this page and check out; orders placed before 12pm are dispatched the same business day from within Australia. Parcels travel in discreet packaging with tracked domestic shipping, and a tracking number is emailed once the parcel is lodged.

Is Retatrutide legal in Australia?
Omega Peptides Australia supplies Retatrutide strictly for lawful in-vitro laboratory research. It is not approved by the TGA for human or veterinary use and is not sold as a medicine or supplement. Purchasers are responsible for ensuring their intended use complies with all applicable laws.

Retatrutide Starter Kit vs Premium Kit: what is the difference?
The Starter Kit supplies one 10mg vial with 3mL of bacteriostatic water, five syringes and two swabs for $189.99. The Premium Kit supplies two 10mg vials with 10mL of water, ten syringes and four swabs for $329.99, a lower cost per vial for longer studies. Both use the same COA-verified batch material.

⚠ For in-vitro research and laboratory use only. Not for human or veterinary use.