Hormonal
HCG Reconstitution Calculator
Exact syringe draw for 5000 IU and 10000 IU vials. Enter your vial size, BAC water volume, and target dose.
Quick answer: 5000 IU vial + 2 mL BAC water = 2500 IU/mL. For 250 IU dose: draw to the 10-unit line on a 100-unit insulin syringe.
5000 IU
Common Vial
2 mL
BAC Water
250 IU
Start Dose
EOD
Frequency
Calculate Syringe Draw
10
Syringe Units
on 100-unit syringe
0.1 mL
Draw Volume
2500 IU/mL
Quick Reference: Syringe Units by Vial & Dose
Vial + Water
125 IU
250 IU
500 IU
Conc.
5000 IU + 2 mL
5 units
10 units
20 units
2500 IU/mL
5000 IU + 1 mL
2.5 units
5 units
10 units
5000 IU/mL
10000 IU + 5 mL
6.25 units
12.5 units
25 units
2000 IU/mL
10000 IU + 2 mL
2.5 units
5 units
10 units
5000 IU/mL
Frequently Asked
How do I reconstitute HCG?
Draw your BAC water volume into a syringe. Inject slowly down the inside wall of the vial. Swirl gently until dissolved. Never shake. Refrigerate at 2-8C immediately. Use within 30 days. Most common ratio: 5000 IU + 2 mL BAC water = 2500 IU/mL.
How many units do I draw for 250 IU?
Depends on your mixing ratio. 5000 IU + 2 mL = 10 units. 5000 IU + 1 mL = 5 units. 10000 IU + 5 mL = 12.5 units. 10000 IU + 2 mL = 5 units. Use the calculator above to get the exact answer for your vial.
What is the best way to mix a 5000 IU vial?
2 mL of bacteriostatic water is the most common ratio. It yields 2500 IU/mL with manageable draw volumes: 5 units for 125 IU, 10 units for 250 IU, 20 units for 500 IU. Using 1 mL instead (5000 IU/mL) halves those volumes, which can make very small doses harder to measure accurately.
How many doses in a 5000 IU vial?
At 125 IU: 40 doses. At 250 IU: 20 doses. At 500 IU: 10 doses. At 250 IU every other day, one 5000 IU vial lasts approximately 40 days.
How many doses in a 10000 IU vial?
At 125 IU: 80 doses. At 250 IU: 40 doses. At 500 IU: 20 doses. At 250 IU every other day, one 10000 IU vial lasts approximately 80 days.
What is the HCG mixing calculator formula?
Concentration (IU/mL) = Vial IU / BAC water mL. Draw volume (mL) = Dose IU / Concentration. Syringe units = Draw volume x 100. Example: 5000 / 2 = 2500 IU/mL. For 250 IU: 250 / 2500 = 0.1 mL = 10 units.