Free Peptide Reconstitution Calculator
Work out the concentration of a reconstituted vial and how many units to draw on a U-100 insulin syringe. Free, with no sign-up. It only does arithmetic on the numbers you enter.
This calculator does arithmetic on the numbers you enter. It is not medical advice and does not suggest a compound, a dose or a water amount. Check every figure against your product's labelling and with a qualified healthcare professional.
Reconstitution questions
How do I reconstitute a peptide vial?
Reconstitution means adding a liquid, usually bacteriostatic water, to the freeze-dried powder in the vial. The amount of water you add sets the concentration: the same vial gives a stronger mix with less water and a weaker mix with more water. Follow your product's instructions for the liquid and the technique.
How is the concentration worked out?
Concentration is the total amount of peptide divided by the volume of water. A 10 mg vial mixed with 2 mL of water holds 10,000 mcg in 2 mL, which is 5,000 mcg in each mL.
How many units should I draw?
Divide your dose by the concentration to get the volume in mL, then multiply by 100 for units on a U-100 insulin syringe, where 100 units is 1 mL. For a 250 mcg dose from a 5,000 mcg/mL mix, that is 0.05 mL, or 5 units.
What is the difference between units and mL?
On a U-100 insulin syringe, 100 units equals 1 mL, so 10 units is 0.1 mL. The units are a scale printed on the syringe, not a measure of the peptide itself.
How much water can my vial hold?
A vial can only hold so much liquid. Check the size printed on your vial before choosing an amount of water. The calculator warns you if the water you enter is more than the vial size you give.
Does this tell me what dose to take?
No. It only converts the dose you enter into units and shows how many doses a vial gives. It does not recommend any compound or dose. Talk to a qualified healthcare professional about that.