Lab Tool
Reconstitution Calculator
A precise, no-frills tool to plan your peptide dilution, doses per vial, and insulin-syringe units. For qualified researchers only.
Lab Tool
Reconstitution Calculator
Calculate how much bacteriostatic water to add and how many units to draw. For qualified researchers only.
Concentration
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Draw to syringe
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Volume per dose
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Doses per vial
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For Research Use Only. This calculator is an educational reference for qualified researchers. Not medical advice. Confirm all measurements before use.
How to use it
- Peptide per vial (mg) — the total peptide mass in the vial you're reconstituting. This is on the label (e.g. Tirzepatide 10 mg).
- Bacteriostatic water (mL) — how much BAC water you're adding to the vial. Most researchers use 1–3 mL. More water makes each unit smaller (finer control, larger draw volume).
- Desired dose (mcg) — the amount of peptide you want in a single shot. Refer to your protocol.
- Syringe size — the capacity of the insulin syringe you'll use. 1 mL = 100 IU.
What the outputs mean
- Concentration — mg of peptide per mL of solution.
- Draw to syringe — insulin units to fill the syringe to. If this exceeds your syringe's capacity, you'll see a warning to split into two draws or use a larger syringe.
- Volume per dose — the mL equivalent of that unit reading, for researchers who prefer volumetric dosing.
- Doses per vial — the whole number of full doses a vial yields at the inputs above.
A quick example
10 mg Tirzepatide reconstituted with 2 mL of BAC water gives a concentration of 5 mg/mL. A 2.5 mg (2 500 mcg) dose is 0.5 mL, or 50 insulin units on a 1 mL syringe. The vial yields four doses at this schedule.