HCG Calculator
Convert a dose of HCG into syringe units. Enter the vial size, the bacteriostatic water added and the dose on your prescription.
Enter the vial size and the water you added.
Arithmetic only. This tool does not recommend a dose; use the one your prescriber gave you.
About HCG (chorionic gonadotropin)
HCG (chorionic gonadotropin) is human chorionic gonadotropin, a glycoprotein hormone rather than a short peptide.
FDA-approved as a prescription medicine (Novarel, Pregnyl).
Brand-name vials are packaged with their own diluent. Use the volume of diluent that was actually added when you enter the water.
HCG vials are labelled in IU (USP units), not mg. IU on the label and units on an insulin syringe are different things: the first is an amount of hormone, the second is a volume.
HCG concentration chart
Concentration for common vial sizes at 1, 2, 5 and 10 mL of water, with the amount held in every 10 units of a U-100 syringe.
| Vial | 1 mL water | 2 mL water | 5 mL water | 10 mL water |
|---|---|---|---|---|
| 5,000 IU | 5,000 IU/mL · 500 IU per 10 units | 2,500 IU/mL · 250 IU per 10 units | 1,000 IU/mL · 100 IU per 10 units | 500 IU/mL · 50 IU per 10 units |
| 10,000 IU | 10,000 IU/mL · 1,000 IU per 10 units | 5,000 IU/mL · 500 IU per 10 units | 2,000 IU/mL · 200 IU per 10 units | 1,000 IU/mL · 100 IU per 10 units |
Units per 1,000 IU of HCG
How many units on a U-100 syringe hold 1,000 IU, for each vial size and water volume. 1,000 IU is a round reference amount for scaling, not a dose: multiply or divide to match the dose on your prescription, or use the calculator.
| Vial | 1 mL water | 2 mL water | 5 mL water | 10 mL water |
|---|---|---|---|---|
| 5,000 IU | 20 units | 40 units | 100 units | 200 units · over 1 mL |
| 10,000 IU | 10 units | 20 units | 50 units | 100 units |
Questions
How do I calculate HCG units on a syringe?
Divide the IU in the vial by the mL of water added to get IU/mL. Divide your prescribed dose by that figure for mL, then multiply by 100 for units on a U-100 syringe. For example, a 10,000 IU vial with 2 mL of water is 5,000 IU/mL, so every 10 units holds 500 IU.
How many units is 1,000 IU of HCG?
It depends on the vial size and the water added. With a 10,000 IU vial, 1,000 IU is 10 units after 1 mL of water, 20 units after 2 mL of water, 50 units after 5 mL of water. The lookup table above covers the other vial sizes.
Is HCG measured in IU or mg?
HCG vials are labelled in IU (USP units), not mg. IU on the label and units on an insulin syringe are different things: the first is an amount of hormone, the second is a volume.
Are IU and syringe units the same for HCG?
No. IU is the amount of HCG in the vial. Units on an insulin syringe are volume: 100 units is 1 mL. A 10,000 IU vial mixed with 2 mL holds 50 IU in each syringe unit.
Does this apply to brand-name HCG?
Brand-name vials are packaged with their own diluent. Use the volume of diluent that was actually added when you enter the water.
How much bacteriostatic water do I add to HCG?
Follow the amount on your pharmacy label. The volume of water does not change how much HCG is in the vial; it only changes how many units a given dose takes up. Enter whatever amount was actually added.
What HCG dose should I enter?
The dose written on your prescription. This page converts a dose into syringe units and does not recommend one.
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