Tool

Reconstitution calculator.

Enter how much peptide is in the vial, how much diluent you are adding, and the dose you have been given. The calculator turns those numbers into millilitres and syringe units — nothing more.

Fill in the three fields to see the calculation.

Your numbers
mg

It is on the label — usually 5 or 10 mg.

ml

Bacteriostatic water, in millilitres.

The dose you have already been given. None is suggested here.

U-100 means 100 units per millilitre.

Result

On the syringe
— units
Volume to draw
— ml
Concentration
— mg/ml
Doses per vial
— doses

How it is calculated

  1. Concentration = peptide in the vial ÷ diluent added. 10 mg in 2 ml gives 5 mg/ml.
  2. Volume = dose ÷ concentration. 0.25 mg at 5 mg/ml is 0.05 ml.
  3. Units = volume × units per millilitre. 0.05 ml on a U-100 syringe is 5 units.

The diluent does not change how much peptide you have — only the volume it is spread through. The same vial with more water gives a larger volume for the same dose, which is usually easier to measure accurately.

This is a converter, not medical advice

The calculator only works with the numbers you type in. It suggests no dose, does not check whether your dose is appropriate, and knows nothing about your health. Dosing is decided by a doctor. Check the result yourself before acting on it.

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