How do you mix a 5000 IU vial of HCG?

Add bacteriostatic water to the powder vial — a common choice is 2 or 3 mL. With 5000 IU in 2 mL, the concentration is 2500 IU/mL, so a 500 IU dose is 0.2 mL = 20 units on a U-100 insulin syringe. Enter your numbers above for exact figures.

How many units is 250 IU of HCG?

It depends on concentration. If you mix 5000 IU in 5 mL (1000 IU/mL), 250 IU is 0.25 mL = 25 units. The calculator gives the exact units for your vial size and water volume.

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HCG dose calculator

Mix your HCG vial and get the exact insulin-syringe units to draw for your target IU dose, plus concentration and doses per vial.

By OptiPin Editorial·Last updated June 6, 2026

Vial size (IU)

Bacteriostatic water added (mL)

Target dose (IU)

Enter your values above

Fill in vial size, water added, and target dose to see units to draw.

Educational use only. This calculator is for informational purposes and does not constitute medical advice. Insulin-unit results assume a U-100 syringe (1 mL = 100 units). Always verify dosing with your prescriber and double-check your math — measurement errors can have serious consequences.

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How to use this calculator

Enter the vial size in IU

Printed on the vial — commonly 2,000, 5,000, or 10,000 IU.

Enter the water you added

The mL of bacteriostatic water used to reconstitute. More water = more dilute = more units per dose.

Enter your target dose in IU

The calculator returns the units to draw on a U-100 syringe.