Retatrutide kits: 10-vial packs, bundles and total mg
In research-use-only (RUO) peptide listings, a kit commonly means ten vials of the same product. If each vial is labeled 20 mg, the kit holds 200 mg in total labeled amount. The 200 mg describes the whole pack; each vial is still labeled 20 mg.
A bundle is less specific. Its vial count and contents can vary. That makes two details worth keeping together: how many vials are included, and the amount on each vial's label.
Retatrutide is a useful example for WPA's readers. In our reported calculator data, it led the compound groups with 15,349 calculations in September through our September 25, 2026 check. These are calculator events, including repeat entries—not people or purchases. The count explains our interest in clarifying these labels; it does not tell us how many kits were bought.
This guide covers packs of RUO peptide vials. Retatrutide is not FDA-approved, and a research label or lab report does not establish suitability for human use. Read the FDA's retatrutide notice.
Retatrutide kit vs bundle: how many vials?
Ten vials is a common kit convention in the RUO space. Several retatrutide sellers state that count directly. One supplier even defines a kit as ten vials of one compound at one size.
Bundles have no single count. They may group several vials of the same product or combine different products. Seller language also overlaps: GenPeptide's kit builder calls its five- or ten-vial selections both bundles and custom kits. Other sellers use “kit” for smaller packs too. Read modifiers such as half kit, custom kit and 5-pack alongside the word itself.
Once the count is clear, the arithmetic is simple:
mg per vial × number of equal-labeled vials = total labeled mg in the pack
Here is how the same 20 mg vial label adds up in different pack sizes:
| Pack contents | Total labeled amount |
|---|---|
| 2 vials × 20 mg each | 40 mg |
| 3 vials × 20 mg each | 60 mg |
| 6 vials × 20 mg each | 120 mg |
| 10 vials × 20 mg each | 200 mg |
Arithmetic examples for equal-labeled vials of one compound, not current seller offers or measured contents.
So “kit” gives useful context about the usual count. The next question is what the mg figure describes. “200 mg total” and “20 mg per vial” can describe the same ten-vial kit. A mixed bundle needs an item-by-item list before you add anything up.
Why a 20 mg vial can appear in a 200 mg kit listing
In WPA's retatrutide comparison, the checked EZ Peptides kit appears as 200 mg. Follow its product link, and the title identifies 20 mg and ten vials per kit. We rechecked that pairing on September 25, 2026.
The two pages describe different quantity levels: the comparison shows the pack's labeled total, while the seller's title gives the label for each vial. 20 × 10 = 200.
The shaded vial is one of the ten. Sources: WPA's retatrutide comparison and the 20 mg, ten-vial kit listing.
Affiliate disclosure: The EZ Peptides product links use WPA's affiliate reference; WPA may earn a commission. The associated WPA-listed code is WPA10. WPA reports testing code application, but this article did not repeat checkout testing or confirm today's discount terms.
Use the linked description to establish the pack quantity before comparing cost. Our check found different saved WPA and seller-page prices, so this example explains quantities rather than ranking deals. For the separate price question, see WPA's retatrutide vial-size and pricing guide.
What WPA checks on a retatrutide kit's COA
A certificate of analysis, or COA, is a lab report about a tested sample. WPA staff review each individual COA that a company makes available for a product listed on WPA. They check that the report concerns the correct product and review these results where the report includes the tests:
- Identity: what peptide the test identifies.
- Purity: the reported purity result and what test it comes from.
- Amount: how much of the named peptide was measured, with its units.
This document review helps connect a product listing with its test information. A missing amount test remains a missing result; a purity percentage cannot supply the missing milligrams. WPA's guide to reading a peptide COA explains those test differences in detail.
The kit example shows why the amount needs context. Its linked Janoshik report #168779 identifies a sample labeled “3P 20mg” and reports retatrutide amounts of 20.96 mg, 21.02 mg and 20.76 mg. The attached photo shows three vials labeled 20 mg. The report is dated June 10, 2026 and names batch EZP-3P2005222026-02; a batch is a group made together.
Those sample results belong beside the 20 mg vial label, not the 200 mg total of ten vial labels. They are different quantities. Multiplying one result by ten would not turn it into a measured result for every vial in a kit.
WPA's review gives readers a starting point. The remaining check is whether the report matches the batch currently being offered and what its sample represents. This article verified the linked report on the lab's website; it did not verify the batch that would be shipped or test the other vials in a pack.
Retatrutide kit and bundle questions
Does a ten-vial kit include water or other supplies?
The ten-vial convention describes the peptide vial count. It does not specify the rest of the contents. Check the itemized description for water or other supplies, especially when comparing a vial kit with a mixed bundle.
Some sellers include supplies as an order perk. For example, WPA lists free bacteriostatic (BAC) water for Felix Chem. Its WPA-listed discount code is WPA10. Check Felix's current minimum order and included items before checkout; an order perk does not mean water comes with every ten-vial kit. This is an affiliate link; WPA may earn a commission.
Can I divide a bundle's total mg by its vial count?
Yes, if the listing confirms the same compound and the same labeled amount in every vial. Otherwise, division gives an average. For example, one 10 mg vial and one 30 mg vial average 20 mg each, but neither vial is labeled 20 mg. Keep different compounds separate too; a mixed bundle's combined weight is not all retatrutide.
Compare retatrutide packs with the right quantities
Open WPA's retatrutide vendor comparison to find a listing and its saved COA details. Use the linked product description to confirm the vial count and each vial's label. Then match the report's sample and batch to the material being offered.
You can now read the three quantities separately: the label on one vial, the total across the pack, and the amount reported for the tested sample. That distinction applies whether the seller calls the offer a kit or a bundle.
Sources and how we checked
Prepared with AI assistance from public seller descriptions, WPA's catalog and approved aggregate data. The terminology review checked ten-vial usage and smaller/custom-kit counterexamples across eleven seller pages. Those pages document word usage; they are not vendor recommendations. The September 24 label audit covered six readable kits from one vendor. The example retained here and its lab-report link were rechecked on September 25.
The activity figure comes from WPA's monthly compound calculator summary, queried September 25 at 20:43 UTC. Retatrutide led the 54 compound groups reported for September so far. Small groups and custom names awaiting review are excluded. Repeat calculations can count again. These figures describe recorded site activity, not market-wide popularity, actual use or kit sales.
WPA's owner supplied the account of staff COA review and code testing. For this article, we read the cited product page and issuer's report; we did not perform laboratory tests, buy products or test checkout. Seller age-and-terms notices remained unaccepted. A linked historical report does not establish today's shipping batch.