For laboratory research use only. Not for human or veterinary use.Lab research use only. Not for human or animal use.

Same-Day DispatchAustralian StockPremium Research GradeVerified CoAsNo Payment Surcharges
Same-day dispatch on business-day orders before 12pm AEST.Same-day dispatch before 12pm AESTFree standard post $199+Free std post $199+

Retatrutide 20 mg Starter

The Retatrutide 20 mg Starter puts one 20 mg Retatrutide vial, a 3 mL vial of bacteriostatic water and twenty graduated syringes in a single kit, packed in Australia by Australian Research Peptides for laboratories and researchers, ready to ship from stock. Its peptide, Retatrutide, is a 39-amino-acid chain studied in metabolic research and reported to bind the GIP, GLP-1 and glucagon receptors. Every item ships sealed, the Retatrutide vial is HPLC-tested, and the kit posts to every state and territory. Sold for in vitro research only.

Bundles · Lyophilised Powder · HPLC-tested · SKU 46426
In stock·
$239.99

Includes Retatrutide 20 mg + BAC Water 3 mL + 0.5 mL Graduated Syringes 20 Pack

Plus alcohol wipes, packed free with the syringes.

$260.97bought separatelySave $20.98 (8%)Free express shipping

Free Express Post on any order with a bundle in it — the whole order, not just the bundle.

1
Presentation
20 mg vial + water + syringes
Grade
High-Purity Research Grade
Form
Lyophilised Powder
Category
Bundles
Same-day dispatch on business-day orders completed before 12pm AEST, Mon–Fri
Tracked shipping Australia-wide ·typically 1–2 business days to most areas by Express Post · free post over $199, free Express over $299
For in vitro research purposes only. Not for human consumption. Not for animal consumption. This product is not a drug, food, cosmetic, or dietary supplement. ARP gives no usage, medical or therapeutic guidance of its own.
Retatrutide 20 mg Starter · 20 mg vial + water + syringes
$239.99

About Retatrutide 20 mg Starter

The Retatrutide 20 mg Starter is a three-item kit: one 20 mg Retatrutide vial, one 3 mL vial of bacteriostatic water and one pack of twenty graduated syringes, with alcohol wipes packed free beside them. No item is decanted, repackaged or mixed. Each arrives sealed exactly as it would on an order of its own, so the Starter is three listings bought together rather than a fourth product.

The three travel together because Retatrutide is supplied as a freeze-dried powder that needs BAC water as a diluent to dissolve it, and a graduated syringe to measure it. Leaving either off a first order holds the work up until a second parcel lands. The Starter carries the same 20 mg as the Retatrutide Value Bundle, in one vial instead of two.

Each component also keeps its own listing. Bacteriostatic water is sterile water preserved with 0.9% benzyl alcohol, and the syringes are standard graduated 0.5 mL units. The Retatrutide vial is HPLC-tested before release. The compound itself is covered below.

Retatrutide belongs to metabolic research. Eli Lilly developed it and has taken it from early studies into large late-stage trials. In laboratory receptor assays it acts at three receptors, GIP, GLP-1 and glucagon, which sets it apart from the GLP-1-only analogues and from the dual GIP/GLP-1 agonists.

Structurally it is a single chain of 39 amino acids built on a GIP peptide backbone, with a twenty-carbon fatty di-acid (C20) attached. That fatty group is described as binding albumin in the blood, the design feature reported to make the molecule long-acting.

Australian Research Peptides supplies the Starter's Retatrutide as a white to off-white freeze-dried solid in a sealed, tamper-evident glass vial. Researchers also write and search for it as reta or retat. It is a laboratory reference compound, intended for benchwork in glassware and cell culture, not for use in any living subject.

Content reviewed

Further reading: Where Is the Best Place to Buy Peptides in Australia?

Retatrutide 20 mg Starter specifications, storage and shipping

  • Compound: Retatrutide 20 mg Starter
  • Appearance: One vial of lyophilised powder, one vial of clear colourless solution, twenty capped syringes
  • Sizes & SKUs: 20 mg vial + water + syringes (46426)
  • Presentation: sealed glass vial
  • Form: Lyophilised Powder
  • Grade: High-purity research grade
  • Purity verification: HPLC-assayed to a minimum of 99% purity before release
  • Identity confirmation: Mass spectrometry
  • Classification: In vitro research purposes only — laboratory reference material

Lyophilised — long term
−20 °C to −80 °C — long-term storage
Lyophilised — short term
2–8 °C — refrigerated, for a few months
Reconstituted
2–8 °C — use within 8–12 weeks
Protect from light and moisture. Handle in accordance with standard laboratory safety practice, including appropriate PPE. This information is provided for laboratory handling only and is not a usage instruction of any kind.

Each peptide in this bundle is HPLC-tested for purity and confirmed by mass spectrometry for identity. A bundle has no certificate of its own — it is a box rather than a batch. The laboratory report for every peptide vial inside it is published in the COA library.

Business-day orders before 12pm AEST are dispatched the same day with tracked shipping. Standard delivery within Australia typically takes 2–5 business days. See Shipping & Delivery for details, and follow your parcel on the Track Order page.

For in vitro research purposes only. Not for human consumption. Not for animal consumption. Not a drug, food, cosmetic, or dietary supplement. No therapeutic or medical claims are made.

Questions about Retatrutide 20 mg Starter

Questions about Retatrutide 20 mg Starter

The Retatrutide 20 mg Starter, stock code 46426, is Australian Research Peptides' entry kit: one 20 mg Retatrutide vial, a 3 mL bacteriostatic water vial and twenty syringes on one order. It is packed in Sydney, so no customs leg applies. Order on a weekday before 12pm AEST and it is posted that afternoon, by Express Post or standard tracked post, to every state and territory.

The Retatrutide 20 mg Starter contains three items: one 20 mg Retatrutide vial, one 3 mL vial of bacteriostatic water and one pack of twenty graduated syringes, plus alcohol wipes packed free with the syringes. The kit always ships with exactly those contents and nothing is swapped for something else.

The Retatrutide 20 mg Starter holds 20 mg of Retatrutide in a single sealed vial. That figure is the weight of peptide in the vial, not of the vial's contents once water is added. Holding all of it in one vial means one reconstitution covers the whole supply.

The Retatrutide 20 mg Starter and the Retatrutide Value Bundle hold the same 20 mg of Retatrutide, the same water vial and the same syringe pack. The Starter puts the peptide in one 20 mg vial; the Value Bundle splits it across two 10 mg vials, so half can stay sealed for later. One vial costs less than two, which is why the Starter is the cheaper kit.

Reta is the short name researchers use for Retatrutide. The Retatrutide 20 mg Starter holds one 20 mg freeze-dried Retatrutide vial, with a vial of bacteriostatic water and twenty syringes to dissolve and measure it. The vial is HPLC-tested, its certificate is in Australian Research Peptides' CoA library, and it is supplied for in vitro research only.

Buying the Retatrutide 20 mg Starter costs less than ordering the 20 mg vial, the water and the syringes as three separate lines, and it rules out the most common first-order gap: a dry vial arriving with nothing to dissolve or measure it with. The saving is shown struck through beside the price on this page.

Yes. The Retatrutide 20 mg Starter includes one 3 mL vial of bacteriostatic water, which is enough to dissolve its single 20 mg vial with water to spare. A Retatrutide vial ordered on its own arrives as sealed dry powder with no diluent supplied.

Twenty graduated 0.5 mL syringes come with the Retatrutide 20 mg Starter, in one sealed pack with alcohol wipes packed free beside it. They are the same syringes Australian Research Peptides sells as a separate 20-pack, so more packs can be added to the same order if the work needs them.

Yes. Freeze-dried peptide takes up very little space, so the 20 mg Retatrutide vial in the Starter can look almost empty, showing only a thin white cake or film on the glass. Overhead light hides it; tilting the vial against a dark background shows it. The water vial next to it is visibly full.

Each item in the Retatrutide 20 mg Starter follows the storage line on its own label: the sealed Retatrutide vial and the bacteriostatic water as printed, and the syringes with no special conditions. Packing them together changes the parcel, not how any item is kept once it arrives.

The 20 mg Retatrutide vial in the Starter is reconstituted by running bacteriostatic water slowly down the inside of the glass rather than onto the powder, then swirling gently until the solution is clear, never shaking it. The volume added sets the concentration, and Australian Research Peptides publishes a reconstitution calculator that works it out for any volume.

The Retatrutide 20 mg Starter includes one 3 mL vial of bacteriostatic water for its single 20 mg vial. The volume used sets the strength: 20 mg dissolved in 2 mL gives 10 mg per mL, and in 3 mL roughly 6.7 mg per mL. A second water vial can be added to the order for a weaker solution.

The Retatrutide 20 mg Starter ships free by both Standard tracked post and Express Post with nothing else in the basket, because Australian Research Peptides waives Express postage on any order holding one of its kits. The waiver covers the whole order, so anything added beside the Starter also travels free by Express.

Add the Retatrutide 20 mg Starter to the cart from this page and check out; it is one catalogue line, stock code 46426, rather than three separate items. Australian Research Peptides posts it from Sydney to every state and territory, so it never waits at customs. PayID or a bank transfer settles the order, with the order reference in the payment.

The Retatrutide 20 mg Starter usually reaches a capital city within 2-5 business days by Standard tracked post, and faster by Express Post. It leaves from Sydney as one parcel, so no customs delay applies. By Express, Sydney's neighbours — the ACT, Victoria and South Australia — and NSW itself typically see it in one to two days, Queensland in up to three, and WA and the NT in two to four; regional addresses can take longer.

The Retatrutide 20 mg Starter is paid for by PayID or bank transfer, the same as every other Australian Research Peptides order, with one payment covering all three items. Digital wallets, buy-now-pay-later and cryptocurrency are not accepted.

Nothing else is needed to begin with the Retatrutide 20 mg Starter, since the diluent, syringes and alcohol wipes a bare vial leaves out are already in the box. A second 3 mL water vial is worth adding only if the work calls for a weaker solution or a fresh water vial partway through.

Yes. The Retatrutide 20 mg Starter is banned in sport because retatrutide is: it has no approval for human use anywhere, which places it in category S0, prohibited at all times. Packaging does not change that. Sport Integrity Australia is the authority for Australian athletes.

Importing a Retatrutide kit into Australia puts the obligations on the importer, with the TGA setting the rules for unapproved goods and Border Force acting at the border. The Australian Research Peptides Starter is packed and posted within Australia, so it never passes through customs. Anyone importing peptides themselves should read the TGA guidance first.

The 20 mg Retatrutide vial in the Starter comes from the same batches Australian Research Peptides sells on their own, each HPLC-tested by an independent laboratory commissioned by the manufacturer before sale. Putting the vial in a kit does not change how it is tested. A bundle has no certificate of its own. A matching certificate is currently published for the 20 mg Retatrutide vial. Open the Retatrutide 20 mg certificate.

The Retatrutide 20 mg Starter, code 46426, is also known as the reta starter, reta starter kit, reta 20 starter, Retatrutide starter kit or Retatrutide 20mg kit, and each of those reaches the same Australian Research Peptides kit. Its peptide is indexed as LY3437943. The Retatrutide vial's batch certificate is filed in ARP's CoA library.

No. The Retatrutide 20 mg Starter is packed by Australian Research Peptides and sold only on its own site. Chemist Warehouse sells registered medicines and consumer health products, not research kits, and retatrutide is not registered in Australia for any pharmacy to supply.