# Retatrutide 4-Vial Bundle

Supplied by Australian Research Peptides Pty Ltd to laboratories and
researchers in Australia, for in vitro research purposes only. Stock is
held and dispatched within Australia.

The Retatrutide 4-Vial Bundle, out of stock for now, contains four sealed 10 mg vials and nothing else, with no bacteriostatic water and no syringes. Australian Research Peptides packs it in Australia for laboratories and researchers who already have their own supplies. Retatrutide, a 39-amino-acid peptide, is studied in metabolic research for its reported activity at three receptors: GIP, GLP-1 and glucagon. That is forty milligrams in total, HPLC-tested and posted to any state or territory. Supplied for in vitro research purposes only.

## Strengths, prices and availability

| Strength | Price (AUD) | Availability | SKU |
| --- | --- | --- | --- |
| 4 × 10 mg vials | $449.99 | Out of stock | 43729 |

## Specifications

| Property | Value |
| --- | --- |
| Appearance | Four vials of white to off-white lyophilised powder, each sealed under a tamper-evident cap |
| Packaging | Four sealed vials packed as one kit; no vial is opened, decanted or relabelled, and no diluent or consumable is included |
| Storage | All four vials to the label they carry — sealed, cold and dry, out of direct light, exactly as a single vial of the same strength is held |

## About

The Retatrutide 4-Vial Bundle is a kit of four identical items: four 10 mg Retatrutide vials. There is no bacteriostatic water in it and no syringe pack. Each vial arrives sealed, exactly as it would if bought on its own, so the bundle is simply a way of buying the same product four times rather than a new fifth product.

This bundle exists because the other two Retatrutide kits are built for a different buyer. The Value Bundle and the Mega Bundle both pair the vials with the diluent and syringes a freeze-dried peptide needs before lab work can begin, which suits a lab that has neither. A lab that already has both would be buying them twice. This listing is the peptide on its own for that buyer, and it is the only bundle in the catalogue built that way.

Choosing four vials is simply about quantity. The milligram figure on each label is the peptide weight, so four 10 mg vials hold 40 mg in total, and splitting that across four sealed vials rather than one larger one means only the vial in use is ever opened. Bacteriostatic water and graduated syringes are sold separately and can be added to the same order.

Retatrutide is studied in metabolic research. Eli Lilly developed the molecule and has taken 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 sets it apart from single-receptor GLP-1 analogues, which act at GLP-1 alone, and from dual GIP/GLP-1 agonists, which act at two.

The molecule is a single chain of 39 amino acids, built on a GIP peptide backbone. It carries a C20 fatty di-acid, meaning a twenty-carbon fatty group attached to the chain. That group is described as binding albumin in the 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 work in glassware and cell culture rather than for any use in a living subject.

## Questions

### Where to buy a 4-vial Retatrutide bundle in Australia?

The Retatrutide 4-Vial Bundle can be bought in Australia directly from Australian Research Peptides, which sells it to laboratories and researchers under stock code 43729 and nowhere else. The four 10 mg vials are packed and posted together from Sydney, so the parcel stays within Australia and never goes through customs. Once the vials are back, any weekday order placed before the 12pm Sydney time cut-off is sent out that afternoon.

### What is included in the Retatrutide 4-Vial Bundle?

The Retatrutide 4-Vial Bundle includes four 10 mg Retatrutide vials and nothing else, so there is no bacteriostatic water, no graduated syringes and no alcohol wipes. That is the only difference between this kit and the other two Retatrutide bundles from Australian Research Peptides, which both include supplies alongside the vials.

### Why does the Retatrutide 4-Vial Bundle have no bacteriostatic water in it?

The Retatrutide 4-Vial Bundle has no bacteriostatic water because it is made for labs that already have some, and buying it again with every kit means paying twice. Bacteriostatic water is sold separately and has a long shelf life, so a lab ordering its third or fourth round of vials usually has it on hand. The Value Bundle and the Mega Bundle are the versions that include it.

### How much Retatrutide is in the 4-Vial Bundle?

The Retatrutide 4-Vial Bundle contains forty milligrams of Retatrutide in total, because each of its four sealed vials holds 10 mg. Each label states the peptide weight, so the four simply add up. Four 10 mg vials are not the same as one 40 mg vial, which Australian Research Peptides does not sell: splitting it leaves three vials untouched while the first is in use, and lets each be made up to its own concentration.

### What is the difference between the Retatrutide 4-Vial Bundle and the Mega Bundle?

The Retatrutide 4-Vial Bundle holds more peptide but fewer items than the Mega Bundle: four 10 mg vials against the Mega Bundle's three, and no supplies at all against its two water vials and sixty syringes. The compound, the vial strength and the batch testing are identical. The choice is not about size but about whether you want the diluent and syringes in the box.

### Why does the Retatrutide 4-Vial Bundle cost more than the Mega Bundle?

The Retatrutide 4-Vial Bundle costs more than the Mega Bundle because it holds a fourth vial of peptide, and a vial of retatrutide is worth far more than the water and syringes the Mega Bundle adds. Comparing them by item count is misleading, because the 4-Vial Bundle is the bigger purchase of the compound itself. Both prices, and the saving each offers against its own contents bought separately, are shown live on the two product pages.

### What is Reta?

Reta is simply short for Retatrutide, and reta x4 or quad reta is what buyers often call this particular four-vial listing. It contains four 10 mg vials of that one compound and nothing else, sold to laboratories and researchers as a single product, with the published Retatrutide certificates in the CoA library. In vitro research purposes only.

### Why choose the Retatrutide 4-Vial Bundle instead of buying four vials separately?

The Retatrutide 4-Vial Bundle gives you the same four vials as one product for less than buying four separately, and the saving is shown on this page rather than written here. It suits buyers who already know how much material their work needs and do not want supplies bundled in. Buying the vials one at a time costs more and gets you nothing extra.

### What else do I need to order alongside the Retatrutide 4-Vial Bundle?

Alongside the Retatrutide 4-Vial Bundle you will need bacteriostatic water as the diluent and graduated syringes for measuring and transferring small volumes, unless your lab already has them. Neither is in this kit, which is the whole point of it. Australian Research Peptides lists both under Lab Supplies, and they can go on the same order. Alcohol wipes do not need a separate order, because they come free whenever syringes are ordered.

### How much bacteriostatic water do four Retatrutide vials need?

Four Retatrutide vials need whatever amount of bacteriostatic water the work calls for, and this kit includes none, so it must already be in your lab or added to the same order. It is the only Retatrutide kit that ships without it. Bacteriostatic water is sold separately under Lab Supplies, in 3 mL and 10 mL vials. How much goes into each vial is a decision for the work rather than a figure Australian Research Peptides sets.

### How do you reconstitute the vials in the Retatrutide 4-Vial Bundle?

Reconstitute each vial in the Retatrutide 4-Vial Bundle exactly as you would a single vial, four times over, remembering that the diluent is not included in this kit. Aim the water at the inside wall of the glass rather than straight onto the powder, then let it dissolve on its own; gentle swirling is fine, but shaking is not. Because the vials are separate, each can be made up to a different strength.

### Is it normal for the Retatrutide vials in this bundle to look empty?

Yes, it is normal for the Retatrutide vials in this bundle to look empty, and seeing four side by side makes it more noticeable, not less. Ten milligrams of freeze-dried peptide takes up almost no space, and it can show as a faint ring, a few flakes, or nothing visible under a ceiling light. The four may also look slightly different from each other, which comes from how each one dried, not from what is inside ([Patel 2017](https://pubmed.ncbi.nlm.nih.gov/28341598/)).

### How should the Retatrutide 4-Vial Bundle be stored?

All four vials in the Retatrutide 4-Vial Bundle should be stored as their own labels direct, sealed, cold, dry and out of direct light, the same as a single 10 mg vial from the same batch. There are no special conditions for the kit, because it is just four identical vials. Arriving in one parcel changes nothing about how each one should be kept.

### Does the Retatrutide 4-Vial Bundle qualify for free shipping in Australia?

Yes, the Retatrutide 4-Vial Bundle qualifies for free shipping on both Standard tracked post and Express Post, because it is the most expensive single product Australian Research Peptides sells. It clears both thresholds on its own, which most of the range cannot do without a second item in the basket. Postage is worked out live for the whole order, so the figure shown at checkout is the one that applies, not anything written on this page.

### How do I get a 4-vial Retatrutide bundle online in Australia?

To get the Retatrutide 4-Vial Bundle online in Australia, open the listing, add it to your cart and check out, as it works like a single product. The quantity box counts kits, not vials, so ordering two means eight vials arrive. Australian Research Peptides sells only through its own website, with no marketplace or reseller, and everything is packed and posted in Sydney.

### How long does the Retatrutide 4-Vial Bundle take to arrive in Australia?

The Retatrutide 4-Vial Bundle travels as one tracked parcel from Sydney, so nothing is split into separate deliveries and nothing waits on international shipping. Express and standard tracked post are both offered at checkout, and the delivery estimate for your state is shown there rather than here, because it changes with Australia Post's network. A four-vial parcel is no slower than a single vial, as the extra weight makes no difference to sorting.

### How do I pay for the Retatrutide 4-Vial Bundle?

You can pay for the Retatrutide 4-Vial Bundle by PayID or bank transfer, the same two options used across the whole store, with nothing specific to this listing. Both are paid from your own bank, so no banking login or password is typed into Australian Research Peptides' own systems. Digital wallets, buy-now-pay-later and cryptocurrency are not accepted anywhere. Whichever option you use, put the order number in the payment description, because a payment with nothing to identify it cannot be matched to an order.

### Is the Retatrutide in this bundle tested before it is supplied in Australia?

Yes, the Retatrutide in this bundle is tested before supply, and the four vials come from ordinary stock rather than a separate batch set aside for kits. Nothing is sold until HPLC has measured its purity and mass spectrometry has confirmed its identity. Selling four on one product line changes the listing, not the testing behind it. A bundle has no certificate of its own. A matching certificate is currently published for the 10 mg Retatrutide vial.

### What else is the Retatrutide 4-Vial Bundle known as?

The Retatrutide 4-Vial Bundle is also known as reta x4, 4x reta, quad reta, a reta 4 pack or a retatrutide 4 vial bundle, and typing any of these into the site's search box brings up this listing. Its catalogue name is Retatrutide 4-Vial Bundle and its stock code is 43729. The peptide inside is also known as reta or retat.

## Ordering

- Standard post $12.99, free on orders over $199.00
- Express post $16.99, free on orders over $299.00
- Payment: PayID or bank transfer
- Dispatched from within Australia; orders do not cross a border

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Product page: https://www.australianresearchpeptides.au/products/bundle-retatrutide-4vial
Shop: https://www.australianresearchpeptides.au/shop