HCG peptide calculator
Pre-filled HCG dosage and reconstitution math: a 1 mg vial, 2 ml of bacteriostatic water, and the resulting U-100 insulin-syringe units. Adjust the inputs below or open the full calculator.
How to reconstitute HCG
- Wipe both vial stoppers with a fresh alcohol swab and let them dry.
- Draw 2 ml of bacteriostatic water into a syringe.
- Insert the needle at an angle into the HCG vial and let the water run slowly down the inner wall — do not inject directly onto the powder.
- Do not shake. Gently swirl the vial until the peptide fully dissolves.
- Store the reconstituted vial refrigerated (2–8 °C / 36–46 °F) and use within roughly 28 days.
- Draw each dose to the unit mark shown above for your target 56 mcg dose.
About HCG
Human chorionic gonadotropin (HCG) is a glycoprotein hormone that mimics luteinizing hormone (LH). It is used clinically for fertility and hypogonadism and off-label to maintain testicular function during testosterone replacement therapy.
Half-life: Biphasic: initial ~6 hours, terminal ~36 hours
Typical dose range: 250–1,500 IU per injection (roughly 28–167 mcg), typically 2–3x weekly
Class: Glycoprotein gonadotropin
HCG calculator FAQ
Is this a HCG peptide calculator or a reconstitution calculator?
Both. This HCG calculator converts vial strength, bacteriostatic-water volume, and target dose into milliliters and insulin-syringe units. It does not recommend a medical dose.
How much bacteriostatic water for a 1 mg HCG vial?
This page is pre-filled with 2 ml of bacteriostatic water for a 1 mg HCG vial because that is a common research ratio. You can adjust the water amount in the full calculator.
How many units is a 56 mcg HCG dose?
With the default 1 mg vial and 2 ml BAC-water ratio, the preview above calculates the U-100 syringe units for a 56 mcg dose. Change the dose if your protocol uses a different amount.
Does this HCG dosage calculator give medical advice?
No. It only performs unit math. Dosing, titration, and whether HCG is appropriate are clinical decisions that should be made with a licensed healthcare professional.
Skip the math — let the app handle it
Peptide Protocol pre-fills reconstitution, tracks every dose, and flags rotations automatically.
See the app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.