Dose per draw
Vial strength
Total peptide in the vialBacteriostatic water
Volume added to the vialResults
Dosage meter — U-100 insulin syringe
100 units = 1 ml · draw to the mark shown
How to use this calculator
Three numbers determine everything: how much peptide is in the vial, how much solvent you add to it, and the dose you intend to draw. The calculator turns those into a syringe measurement.
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Set the dose per draw
Pick a preset or type your own figure, using the mcg/mg toggle to say which unit you mean. This is the quantity of peptide in a single draw, not the size of the vial.
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Enter the vial strength
The total mass of lyophilised peptide in the vial before anything is added — printed on the label, commonly 5, 10 or 15 mg. Type a figure if yours is not listed.
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Enter the solvent volume
How much bacteriostatic water goes into the vial. This is the number that sets the concentration: more water gives a larger volume per draw, which is easier to measure accurately on a small syringe; less water makes the solution stronger and each draw smaller.
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Read the meter
The dosage meter shows where that draw falls on a U-100 insulin syringe. If the figure exceeds 100 units it will not fit in one syringe — add less water and the draw gets smaller.
The arithmetic
10 mg ÷ 2 ml = 5.00 mg/ml
0.1 mg ÷ 5.00 mg/ml = 0.020 ml
0.020 ml × 100 = 2 units
Calculated from the values entered. For in vitro laboratory research only — not for human consumption, and not guidance on administration.