Tirzepatide 15mg Vial: Specifications, Reconstitution, and Storage
Reviewed by the VendPeptides Editorial Team. Written from product labeling, the batch certificate of analysis and published literature. Last updated September 2026.
The Tirzepatide 15mg Vial is a research-use-only lyophilized peptide supplied as a single 15 mg vial or within multi-vial laboratory kits.
Tirzepatide has been studied in published preclinical and clinical literature as a dual GIP/GLP-1 receptor agonist, including the SURMOUNT-1 phase 3 trial.
It is also known by the code name LY3298176 and the brand names Mounjaro and Zepbound, and VendPeptides sells it in 5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, and 60 mg vial strengths.
This guide covers what the Tirzepatide 15mg Vial is, reconstitution and concentration math by vial size, safe laboratory handling, and where to buy it.
What is Tirzepatide 15mg Vial?
The Tirzepatide 15mg Vial is a single glass vial containing 15 mg of lyophilized tirzepatide, a synthetic dual GIP/GLP-1 receptor agonist peptide with CAS number 2023788-19-2.
In the published literature it has been studied as a dual incretin receptor agonist, and the SURMOUNT-1 phase 3 trial reported its metabolic research profile in adults with obesity.
As sold by VendPeptides, the Tirzepatide 15mg Vial is a laboratory reference material. For research purposes only. Not for human consumption.
Every vial ships with a batch certificate of analysis (COA), and the vial label states the exact fill mass, storage conditions, and catalog information.
Tirzepatide 15mg Vial, LY3298176 and Mounjaro: are they the same?
Yes. LY3298176 is the developmental code name for tirzepatide, and Mounjaro and Zepbound are the brand names under which the same active molecule appears in approved pharmaceutical products.
The difference is regulatory, not chemical: a Tirzepatide 15mg Vial sold for laboratory research is not approved for any medical or veterinary purpose, while the brand-name products are approved medicines with their own labeling.
For research purposes only. Not for human consumption.
Researchers should confirm identity and purity against the batch certificate of analysis (COA) rather than relying on the alias name alone.
What has Tirzepatide 15mg Vial been studied for?
Tirzepatide has been studied in published research as a dual GIP/GLP-1 receptor agonist, with the SURMOUNT-1 phase 3 trial reporting findings in adults with obesity and the FDA approval information for Mounjaro describing its type 2 diabetes indication.
The Tirzepatide 15mg Vial itself is a laboratory reference material; it is not approved for any medical or veterinary purpose, and it is not for human or veterinary use.
For research purposes only. Not for human consumption.
Readers should consult the published literature and the batch certificate of analysis (COA) supplied with each vial for identity, purity, and analytical data.
Tirzepatide 15mg Vial reconstitution and concentration by vial size
Adding 3 mL (3,000 µL) of bacteriostatic water to a 15 mg vial gives a 5 mg/mL laboratory concentration.
| Vial size | 10-vial kit total | Diluent added | Resulting concentration | µg per µL |
|---|---|---|---|---|
| 5 mg | 50 mg | 1 mL (1,000 µL) | 5 mg/mL | 5 µg/µL |
| 10 mg | 100 mg | 2 mL (2,000 µL) | 5 mg/mL | 5 µg/µL |
| 15 mg | 150 mg | 3 mL (3,000 µL) | 5 mg/mL | 5 µg/µL |
| 30 mg | 300 mg | 3 mL (3,000 µL) | 10 mg/mL | 10 µg/µL |
| 60 mg | 600 mg | 3 mL (3,000 µL) | 20 mg/mL | 20 µg/µL |
The vial label and the batch certificate of analysis (COA) take priority over any table for the actual fill mass and recommended diluent volume.
Tirzepatide 15mg Vial 10mg vial reconstitution
For a 10 mg vial, adding 2 mL (2,000 µL) of bacteriostatic water yields 5 mg/mL, and adding 1 mL (1,000 µL) yields 10 mg/mL.
Swirl or roll the vial gently; do not vortex or shake, because foaming and shear can affect peptide integrity.
For research purposes only. Not for human consumption.
Tirzepatide 15mg Vial 5mg vial reconstitution
For a 5 mg vial, adding 1 mL (1,000 µL) of bacteriostatic water yields 5 mg/mL, and adding 0.5 mL (500 µL) yields 10 mg/mL.
Record the exact diluent volume and date on the vial label, and verify the calculation against the batch certificate of analysis (COA).
For research purposes only. Not for human consumption.
How long does reconstituted Tirzepatide 15mg Vial stay stable?
Stability after reconstitution depends on the diluent, storage temperature, and handling; the vial label and the batch certificate of analysis (COA) state the supplier's recommended storage conditions.
As a general laboratory practice, keep reconstituted peptide refrigerated and protected from light, and avoid repeated freeze-thaw cycles.
For research purposes only. Not for human consumption.
How to handle Tirzepatide 15mg Vial safely in the laboratory
- Read the vial label and the batch certificate of analysis (COA) before opening the vial.
- Work in a clean, designated laboratory area with gloves, eye protection, and a lab coat.
- Wipe the vial septum and work surface with an appropriate laboratory disinfectant before and after handling.
- Reconstitute with the diluent volume stated on the label, adding liquid slowly down the vial wall.
- Swirl or roll gently to dissolve; do not vortex, shake, or warm the vial.
- Label the vial with the reconstitution date, diluent volume, and final concentration.
- Store the vial according to the label and COA, and dispose of laboratory waste per your institution's chemical hygiene plan.
Warning: Poor sterile technique, mislabeling, or cross-contamination between vials can invalidate research results, so use dedicated equipment and label every vial immediately.
Is Tirzepatide 15mg Vial the same as Retatrutide?
No. Tirzepatide is a dual GIP/GLP-1 receptor agonist, while retatrutide is a separate research peptide studied as a triple receptor agonist.
They have different molecular structures, different CAS numbers, and different published research profiles, so they cannot be substituted for one another in an experiment.
For research purposes only. Not for human consumption.
See Retatrutide 15mg Vial: Specifications, Reconstitution, and Storage for the related compound's laboratory reference data.
Is Tirzepatide 15mg Vial safe for humans?
No. The Tirzepatide 15mg Vial is sold as a laboratory reference material and is not approved for any medical or veterinary purpose.
It is not for human consumption, and FDA guidance on research chemicals and 'not for human consumption' labeling applies to products of this type.
For research purposes only. Not for human consumption.
Any human health question should be directed to a licensed healthcare professional, not to a research supplier.
Can Tirzepatide 15mg Vial be used for pets or animals?
No. The Tirzepatide 15mg Vial is a research-use-only laboratory material and is not a veterinary product.
It is not approved for any medical or veterinary purpose, and it is not for human or veterinary use.
For research purposes only. Not for human consumption.
Consult a licensed veterinarian for any animal health question.
Where to buy Tirzepatide 15mg Vial (5 mg to 60 mg)
VendPeptides supplies the Tirzepatide 15mg Vial from a US warehouse, with single vials available in 5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, and 60 mg strengths and 10-vial kits from 50 mg to 600 mg total.
Every vial label carries the batch certificate of analysis (COA) reference and expiry information, and the COA is available for download.
Order the single vial as Tirzepatide Single Vial or the multi-vial format as Tirzepatide 10-Vial Bulk Kit TR.
Related laboratory reference materials include Retatrutide 10-Vial Bulk Kit RT and Semaglutide 10-Pack Kits SM, and the wider catalog is listed under Metabolic Research Peptides.
For research purposes only. Not for human consumption.
Frequently asked questions
Is Tirzepatide 15mg Vial safe for humans?
No. It is sold as a laboratory reference material, is not approved for any medical or veterinary purpose, and is not for human consumption. For research purposes only.
Is Tirzepatide 15mg Vial the same as Retatrutide?
No. Tirzepatide is a dual GIP/GLP-1 receptor agonist and retatrutide is a separate research peptide with a different structure and CAS number. They are not interchangeable in laboratory work.
How do I reconstitute a Tirzepatide 15mg Vial 10mg vial?
Adding 2 mL (2,000 µL) of bacteriostatic water to a 10 mg vial gives 5 mg/mL, while 1 mL (1,000 µL) gives 10 mg/mL. Confirm the diluent volume against the vial label and batch certificate of analysis (COA).
Can Tirzepatide 15mg Vial be used for pets or animals?
No. It is a research-use-only laboratory material and is not a veterinary product; consult a licensed veterinarian for any animal health question. For research purposes only. Not for human consumption.
Is Tirzepatide 15mg Vial the same as Mounjaro or Zepbound?
The active molecule is the same, but the Tirzepatide 15mg Vial is a research-grade laboratory material that is not approved for any medical or veterinary purpose. Brand-name products carry their own regulatory approvals and labeling.
Is Tirzepatide 15mg Vial a peptide, and what class is it?
Yes. It is a synthetic peptide with CAS number 2023788-19-2, classified in the literature as a dual GIP/GLP-1 receptor agonist and also known by the code name LY3298176.
Can you still buy Tirzepatide 15mg Vial?
Yes. VendPeptides lists the Tirzepatide 15mg Vial as a single vial and within 10-vial kits, with batch certificate of analysis (COA) documentation. For research purposes only. Not for human consumption.
Sources and further reading
- Jastreboff AM et al. Tirzepatide Once Weekly for the Treatment of Obesity (SURMOUNT-1). NEJM 2022.
- FDA — Mounjaro (tirzepatide) approval information
- PubChem — Tirzepatide
Disclaimer. This article is educational and describes laboratory handling and published literature only. It is not medical or veterinary advice and is not a substitute for a licensed professional. For research purposes only. Not for human consumption. Products are sold to qualified researchers for in-vitro and laboratory research, are not approved drugs, foods, cosmetics or devices, and are not for human or animal use. This article was written with AI assistance and reviewed by a member of the VendPeptides Editorial Team.