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Retatrutide 4-Vial Bundle — 4 × Retatrutide 10mg, as supplied

Retatrutide 4-Vial Bundle

The Retatrutide 4-Vial Bundle holds four sealed 10 mg vials and nothing else — no bacteriostatic water and no syringes. Australian Research Peptides packs it in Australia for laboratories and researchers who already keep their own consumables. Retatrutide is a 39-amino-acid peptide reported to bind the GIP, GLP-1 and glucagon receptors, and is studied in metabolic research. Forty milligrams across four vials, every batch HPLC-tested, posted to all states and territories. Supplied for in vitro research purposes only.

Bundles · Lyophilised Powder · Batch-tested · SKU 43729
In stock·
$449.99

Includes 4 × Retatrutide 10 mg

$559.96bought separatelySave $109.97 (19.6%)Free shipping

Free Standard tracked post — this bundle clears the $199 threshold on its own, with nothing added.

1
Presentation
4 × 10 mg vials
Grade
High-Purity Research Grade
Form
Lyophilised Powder
Category
Bundles
Same-day dispatch on business-day orders completed before 2pm 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 dosing, medical or therapeutic guidance of its own.
Retatrutide 4-Vial Bundle · 4 × 10 mg vials
$449.99

Frequently Bought Together

About Retatrutide 4-Vial Bundle

The Retatrutide 4-Vial Bundle is a four-item kit in which all four items are the same thing: four 10 mg Retatrutide vials. There is no bacteriostatic water in it and no syringe pack. Each vial arrives sealed in the container it would have arrived in on its own, so the bundle is a way of buying one listing four times rather than a fifth product.

It exists because the other two Retatrutide kits answer a different question. The Value Bundle and the Mega Bundle both pair vials with the diluent and the syringes a freeze-dried peptide needs before any benchwork begins, which is the right kit for a bench that has neither. A bench that already holds both is buying those items twice. This listing is the peptide on its own for that reader, and it is the only bundle in the catalogue built that way.

Four vials is a quantity decision and nothing more. The milligram figure on each label is peptide weight, so four 10 mg vials hold 40 mg in total, and keeping that across four sealed containers rather than one larger vial means only the vial in use is ever opened. Bacteriostatic water and insulin syringes are both catalogue lines of their own and can be added to the same order.

Retatrutide is studied in metabolic research. Eli Lilly developed the molecule and has carried it from early work through large late-stage studies. In laboratory receptor assays it binds the GIP, GLP-1 and glucagon receptors. That triple target separates it from semaglutide, which acts at GLP-1 alone, and from tirzepatide, which acts at two.

The molecule is one continuous chain of 39 amino acids, engineered from a GIP peptide backbone. The chain carries a C20 fatty di-acid, meaning a twenty-carbon fatty group bonded onto it. That group is described as binding albumin in blood, which is the design feature reported to make the molecule long-acting.

Australian Research Peptides supplies retatrutide as a freeze-dried solid, white to off-white, sealed in a tamper-evident glass vial. It is also written and searched as reta or retat. The material is a laboratory reference compound, characterised for benchwork in glassware and cell culture rather than for any use in a living subject.

Content reviewed

Further reading: Why Research Peptides Come in Vials and Not Pens

Retatrutide 4-Vial Bundle specifications, storage and shipping

  • Compound: Retatrutide 4-Vial Bundle
  • Appearance: Four vials of white to off-white lyophilised powder, each sealed under a tamper-evident cap
  • Sizes & SKUs: 4 × 10 mg vials (43729)
  • Presentation: sealed glass vial
  • Form: Lyophilised Powder
  • Grade: High-purity research grade
  • Purity verification: HPLC-assayed on every batch to a minimum of 99% purity — the measured result for your batch is stated on its Certificate of Analysis
  • 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.

Every batch undergoes HPLC purity analysis and mass-spectrometry identity confirmation. 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 2pm 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 4-Vial Bundle

Questions about Retatrutide 4-Vial Bundle

Australian Research Peptides sells it direct to laboratories and researchers under stock code 43729, and stocks it nowhere else. Four 10 mg vials leave as one line, assembled and lodged in Sydney, so the parcel is domestic from end to end and never presented to customs. An order placed on a business day before 2pm AEST is dispatched that afternoon.

The Retatrutide 4-Vial Bundle holds four 10 mg Retatrutide vials and nothing else. No bacteriostatic water, no insulin syringes and no alcohol swabs are included. That is the whole difference between this kit and the other two Retatrutide bundles Australian Research Peptides lists, both of which pack consumables alongside the vials.

Because the kit is built for a bench that already has some. Bacteriostatic water is a catalogue line of its own with a long shelf life, and a laboratory ordering its third or fourth round of vials usually holds it already. Buying it again with every kit is paying twice for something sitting on the shelf. The Value Bundle and the Mega Bundle are the versions that include it.

Forty milligrams, split across four sealed 10 mg vials. Each label states peptide weight, so the four add rather than overlap. Four tens is not the same purchase as one 40 mg vial, which Australian Research Peptides does not list at all: the split leaves three containers untouched while the first is in use, and lets each be taken to its own concentration.

The Retatrutide 4-Vial Bundle holds more peptide and fewer items. It carries four 10 mg vials against the Mega Bundle's three, and no consumables at all against the Mega Bundle's two water vials and sixty syringes. The compound, the vial strength and the batch testing are identical. The choice is not about size — it is about whether the diluent and the syringes are wanted in the box.

Because it holds a fourth vial of peptide, and a vial of retatrutide is worth considerably more than the water and syringes the Mega Bundle adds. Comparing them by item count is misleading: the 4-Vial Bundle is the larger purchase of the compound itself. Both prices, and the saving each carries against its own contents bought separately, are shown live on the two listings.

Reta is what buyers type instead of Retatrutide, and reta x4 or quad reta is what they call this particular listing. It is four 10 mg vials of that one compound and nothing besides, sold to laboratories and researchers as a single line, with each batch certificate published in the CoA library. In vitro research purposes only.

It is the same four vials on one catalogue line for less than four individual listings come to, and the saving is shown against that figure on this page rather than quoted in prose. It is meant for a reader who already knows how much material a piece of work needs and does not want the consumables bundled in. Ordering the vials one at a time costs more and achieves nothing extra.

Two things, unless the bench already holds them: bacteriostatic water as the diluent, and insulin syringes for measuring and transferring small volumes. Neither is in this kit, which is the point of it. Australian Research Peptides lists both under Lab Supplies and they can go on the same order. Alcohol swabs are not an ARP catalogue line at all and come from elsewhere.

None at all — this is the one Retatrutide kit that ships no bacteriostatic water with it, so whatever four vials call for has to be on the bench already or added to the same order. It is a separate catalogue line under Lab Supplies, in 3 mL and 10 mL. How much of it any one vial takes is a decision for the work rather than a figure Australian Research Peptides sets.

Exactly as one vial is, four times over — and the diluent is not in this kit, so it has to be on the bench already or on the same order. Aim the water at the inside wall of the glass rather than straight down onto the cake, then leave it to clear on its own; swirling is fine and shaking is not. Because the vials are separate, each can be taken to a different strength.

That is normal, and four vials side by side make it more noticeable rather than less. Ten milligrams of lyophilised peptide occupies almost no volume — the cake can sit as a faint ring, a scatter of flakes, or nothing the eye picks up under a ceiling light. The four may also look slightly unlike one another, which is a property of how each cake dried and not of what is inside.

All four vials follow the storage printed on their own labels, sealed, cold and dry and out of direct light — the same condition a single 10 mg vial of the same batch is held under. There is no separate condition for the kit, because the kit is four identical vials and nothing else. Arriving in one parcel changes nothing about how any of them is held once it does.

Yes, on both services. This is the dearest single line Australian Research Peptides lists, so it passes the standard waiver and the higher Express one unaided — which most of the catalogue cannot do without a second item in the basket. Postage is calculated live against the order as a whole, so the figure at checkout is the one that applies rather than anything written on this page.

Open the listing, add it to the cart and check out — it behaves as one product, so the quantity box counts kits and not vials, and asking for two of them means eight vials arriving. Australian Research Peptides sells from its own site only, through no marketplace and no reseller, so there is no second checkout to weigh up. Everything is assembled and lodged in Sydney.

Four sealed vials travel as one tracked parcel out of Sydney, so nothing is split across consignments and nothing waits on an international leg. Express and standard tracked are both offered at checkout, and the estimate for your own state is shown there rather than quoted here, because it moves with Australia Post's network. A four-vial parcel is no slower than a single vial — at this weight the difference does not reach the sorting line.

Card, PayID or bank transfer — the three routes the whole store runs on, with nothing specific to this listing. A card number is typed into Stripe's hosted fields and never reaches Australian Research Peptides' own systems. Wallets, buy-now-pay-later and cryptocurrency are declined everywhere in the business. Whichever route is used, the order number has to appear in the payment description — a deposit arriving with nothing to identify it cannot be matched to a basket.

Yes, and the four vials are drawn from ordinary stock rather than a run set aside for kits. Nothing reaches a shelf here until HPLC has measured its purity and mass spectrometry has confirmed its identity. Selling four on one catalogue line changes the entry, not the analysis behind it. A bundle has no certificate of its own. A matching certificate is currently published for the 10 mg Retatrutide vial. Open the Retatrutide 10 mg certificate.

reta x4, 4x reta, quad reta, a reta 4 pack, a retatrutide 4 vial bundle — every one of those is typed into the search box here and every one returns this single listing, because each has its own row in the site's alias table. The catalogue name is Retatrutide 4-Vial Bundle and the stock code is 43729. The compound inside answers to reta and to retat.