How the KPV calculator works
Lyophilized (freeze-dried) powder in a sealed vial, labelled in milligrams. The quick-fill buttons in the calculator are the vial sizes KPV is commonly labelled in (5 mg and 10 mg). If yours is different, type it in.
Amounts of KPV are usually written in micrograms (mcg), so the calculator opens in mcg.
For a field-by-field walkthrough and a guide to syringe types, see the main peptide calculator.
KPV concentration table
Each labelled vial size at the same three round water volumes used across this site. It shows how the arithmetic behaves and is not a suggestion of what to use.
| Vial | Water added | Concentration | Each mark holds |
|---|---|---|---|
| 5 mg vial | 1 mL | 5 mg/mL | 50 mcg per unit |
| 5 mg vial | 2 mL | 2.5 mg/mL | 25 mcg per unit |
| 5 mg vial | 3 mL | 1.67 mg/mL | 16.7 mcg per unit |
| 10 mg vial | 1 mL | 10 mg/mL | 100 mcg per unit |
| 10 mg vial | 2 mL | 5 mg/mL | 50 mcg per unit |
| 10 mg vial | 3 mL | 3.33 mg/mL | 33.3 mcg per unit |
Every row for a given vial holds the same total. To compare volumes for a specific reading, use the BAC water calculator.
The formula, step by step
The “Try example numbers” button uses one fixed rule on every page: the smallest labelled vial, 2 mL of water, and whatever amount lands on the 10-unit mark. The amount is a by-product of that rule and not a typical or suggested KPV dose.
- Concentration: 5 mg ÷ 2 mL = 2.5 mg/mL.
- The 10-unit mark is 10 ÷ 100 = 0.1 mL, which holds 0.1 × 2.5 = 0.25 mg (250 mcg).
- Run it forwards to check: 0.25 mg ÷ 2.5 mg/mL = 0.1 mL, and 0.1 × 100 = 10 units.
KPV: general reference
General educational reference for research purposes only. None of it is a recommendation, none of it is medical advice, and none of it is used by the calculator, which works only on the numbers you enter.
KPV is a peptide of just three amino acids: lysine, proline and valine. They are the last three of the 13 amino acids in the hormone alpha-MSH.
The published work on KPV is laboratory research in cells and animals. There are no human clinical trials, so there is no human safety or pharmacokinetic data at all.
It lacks the part of alpha-MSH that binds the melanocortin receptors, which is why it is treated as a separate compound and not simply a short version of the hormone.
- Class
- Tripeptide fragment of alpha-MSH
- Group
- Short peptides (3 to 9 amino acids)
- Also known as
- Lys-Pro-Val, alpha-MSH (11-13)
- Molecular weight
- About 342 Da
- Half-life
- Not established. No human pharmacokinetic study of KPV has been published.
- Regulatory status
- Not approved as a medicine. KPV is not approved as a medicine by the FDA, the EMA or any other major regulator. Its position in US pharmacy compounding changed in 2023 and again in 2026 and remains under FDA review, so check the FDA’s current bulk drug substances lists.
- Labelled vial sizes
- 5 mg and 10 mg
Arithmetic slips to watch for with KPV
A very light molecule, weighed the same way
KPV is among the smallest peptides sold, about 342 Da. That changes nothing in the arithmetic: the calculator works by weight, so 5 mg is 5 mg whatever the size of the molecule.
Same vial sizes as other peptides, same numbers
With 2 mL of water a 5 mg vial is 2.5 mg/mL, or 25 mcg per unit on a U-100 syringe, and a 10 mg vial is 5 mg/mL, or 50 mcg per unit. Those are properties of the vial size and the water, not of KPV.
What this page does not do
The calculator performs mathematical conversions only. It does not recommend, suggest or verify any KPV dose or schedule, it does not say how much water to add, and it does not say what KPV is for, whether it is safe, or whether it is legal where you live. It is not medical advice, diagnosis or treatment, and Peptrack does not sell, supply or endorse any substance.
Always confirm measurements with a licensed healthcare provider or pharmacist. See the full disclaimer.
Sources
- KPV tripeptide (Wikipedia, with primary references)
- BSCG: what is changing with peptide regulation in 2026
Facts last checked: September 2026. Regulatory status changes, so check the regulator’s own pages for the current position.
