Pick the vial, the water you added and the dose. Get the exact draw in units for the syringe in your hand.
Draw to15.0units0.15 mL
Step 1 of 4
1How many mg are in your vial?
Vial strengthamount printed on the vial
2How many mL of water did you add?
Bacteriostatic water addedhow much water you added
3What dose do you want to convert?
Target doseenter the dose you want to convert
This vial holds 10,000 mcg in total.
4Which syringe are you using?
Syringe typematch the label on your syringe
U-100 insulin syringe · 1 mL · lines every 2 units · 1 unit = 0.01 mL
Draw to
15.0units
0.15 mL · 3.33 mg/mL · 33 mcg per unit · 20 doses per vial
15.0 units on a U-100 insulin syringe · 1 mL · lines every 2 units, which is 0.15 milliliters. The nearest syringe line is 16 units.
This falls between two syringe lines. The nearest line on this U-100 syringe is 16 units. Open the syringe details below to see the difference.
10 mg ÷ 3 mL = 3.33 mg/mL → 33 mcg/unit · 500 mcg = 0.150 mL =15.0 units
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Show the math and syringe details+
Can this syringe show the result clearly?
This draw falls between syringe lines. The exact volume is 15.00 units, but a U-100 syringe has a line every 2 units. Using the nearest line gives 16 units — a 6.7% difference, or 33 mcg.
Want an easier syringe number?
2 mL of water instead5.00 mg/mL · 50 mcg/unit10.0 uon a syringe line
2.5 mL of water instead4.00 mg/mL · 40 mcg/unit12.5 u4.0% off
Adding more water makes the mixture less concentrated, so the same dose uses more syringe units. It does not change how much peptide is in the vial.
This setup is in the address bar — every input is part of the link.
Educational math, not medical advice — dosing decisions belong to a licensed clinician. The tabs above also plan a schedule week by week and count how many doses one vial holds.
How to use the calculator
STEP 1
Enter the amount in the vial
Use the total amount printed on the vial, in mg.
STEP 2
Enter the water you added
Use the amount of water added to that vial, in mL.
STEP 3
Enter the dose you want to convert
Choose mg or mcg, then match the result to your syringe.
KPV is three amino acids — lysine, proline, valine. They are the tail end of the hormone that controls skin pigment. It is sold for gut inflammation, and for eczema and other inflamed skin.
The interest behind that is real but narrow. In mice given colitis chemically, and in colon cells in a dish, it quietens inflammatory signaling. The FDA states it has found no data on any person receiving it, by any route.
No completed controlled human trial has shown which dose works for KPV. There is no study-backed human dosing program to publish. Animal quantities are not converted into a human recommendation.
no human dose shown to work
The calculator converts the dose you enter into mL and syringe units. It does not show that any dose of KPV is safe or works.
Examples using a 10 mg KPV vial
Each row starts with the same 10 mg vial and changes only the amount of water. More water makes the mixture less concentrated, so the same dose uses more syringe units.
◆ How the water amount changes the resultdose used: 500 mcg
For a 10 milligram vial: bacteriostatic water added, resulting concentration, micrograms per U-100 unit, and the draw for a 500 mcg dose.
Water added
Concentration
Per U-100 unit
Draw for 500 mcg
Nearest syringe line
2 mL
5.00 mg/mL
50.0 mcg
10.0 u · 0.100 mL
exactly 10 u
3 mL
3.33 mg/mL
33.3 mcg
15.0 u · 0.150 mL
16 u · 6.7% off
The vial, water and dose shown here are the calculator’s starting example for KPV. Replace them with your own values. Every result in the table is calculated from those inputs.
Drawn from once a week at 500 mcg, a 10 mg vial yields 20 doses — about 20.0 weeks of supply. No cited source says how long the mixed vial keeps, so no storage window is shown.
Comfortable draws, and no human exposure data at all
The FDA states it has found no human exposure data for KPV by any route. The arithmetic below is exact, and it applies to an amount that has never gone into a person in a study.
3Open the mixing details — 3 notes
Three amino acids, and cheap to counterfeit
Three residues is as short as any molecule on this site. The page makes the practical point: a peptide that short is cheap to fake and hard to tell apart by looking at it.
Every figure on this page starts from the strength printed on a vial. Here that print is a seller’s claim with less standing behind it than usual.
The research is oral and topical, and it is in mice
The work behind KPV is chemically induced gut inflammation in mice and cultured gut cells. Current effort is still on getting the peptide through a rodent gut intact, which sits several stages before an amount for a person.
Oral, topical and injected forms all sell under this one name. They do not deliver comparable amounts, so nothing quoted for one describes another.
An easy reading is not a verdict
The conventional amount lands between roughly ten and thirty units across this page’s vials and volumes. That is a forgiving part of the barrel, where rounding hardly matters.
It is a property of the vial sizes people happen to sell. It is not a signal that the amount is right, and the ease of the measurement is the least important thing on this page.
A regulator put the absence in writing, and the product it examined was a cream
Most empty records here are empty because a search came back with nothing. That is an argument from silence, however well the search was run. This one is different. A federal agency states in its own words that it found no human exposure data by any route, and it published the working.
4Read the supporting evidence — 4 supporting notes
An empty complaints file is an unopened file
The agency’s briefing document is specific. The party asking for this substance cited nine references, and not one was a study of the peptide given to a person.
Even the paperwork describes something other than this vial
The preparation put forward for compounding was a topical cream or gel. That is what the request covered. The uses examined were wound healing and inflammation.
No animal has been given it under the skin either
The mouse work is oral. The peptide goes into drinking water, or down a tube inside particles built to protect it through the gut. The figure everyone quotes from cell work is a concentration in a dish.
Why the trial is not coming, and what gets quoted instead
Three residues, and an old sequence. In its bare form it is effectively unpatentable. That removes the reason anyone would fund the toxicology package a first study in people needs.
Units to dose at 3.33 mg/mL
Mix 10 mg into 3 mL and one U-100 unit carries 33.3 mcg. The table shows how much peptide is in each numbered syringe line. These are conversion examples, not suggested doses.
10Open the unit conversion table — 10 rows
Numbered U-100 syringe lines converted to volume and mass at 3.33 milligrams per milliliter.
U-100 line
Volume
Mass (mcg)
Mass (mg)
10 u
0.10 mL
333 mcg
0.333 mg
20 u
0.20 mL
667 mcg
0.667 mg
30 u
0.30 mL
1,000 mcg
1 mg
40 u
0.40 mL
1,333 mcg
1.333 mg
50 u
0.50 mL
1,667 mcg
1.667 mg
60 u
0.60 mL
2,000 mcg
2 mg
70 u
0.70 mL
2,333 mcg
2.333 mg
80 u
0.80 mL
2,667 mcg
2.667 mg
90 u
0.90 mL
3,000 mcg
3 mg
100 u
1.00 mL
3,333 mcg
3.333 mg
How the math works
Concentration — divide the amount in the vial by the water you added: mg ÷ mL = mg/mL. This tells you how many mg are in each mL.
Volume — the dose divided by that concentration: dose ÷ (mg/mL) = mL.
Units — on a U-100 syringe one unit is 0.01 mL, so mL × 100 = units. A U-40 unit is 0.025 mL, so the wrong barrel is a 2.5× error. That is why the calculator asks which one you have.
Rounding gap — the exact draw against the nearest syringe line: |exact − nearest line| ÷ exact × 100 = % difference.
Medically reviewed by Jennifer Montecillo, MD · non-practicing medical reviewer·Reviewed 2026-08-13
Useful guides for this calculation
The math is only one part of the question. These guides cover the compound, published doses, side effects, mixing steps and supplies.