Peptide calculator: reconstitution, dosage and syringe units
Enter the vial amount, the bacteriostatic water you added, and your target dose. Get the exact units to draw on an insulin syringe, the concentration, doses per vial, and cost per dose. Works for any peptide in the catalog.
The milligrams printed on your vial label.
How much water you mix into the vial. More water makes small doses easier to draw.
How much peptide you want in each draw (1 mg = 1000 mcg).
How often you draw — used for vial duration and monthly cost.
Match the insulin syringe you're using (100 units = 1 mL).
Mix 10 mg of peptide with 2 mL of bacteriostatic water. Then draw to the 5-unit mark (0.05 mL) on a 0.5 mL (50u) syringe for each 250 mcg dose. One vial gives about 40 doses — roughly 6 weeks at 7 per week.
U-100 insulin syringe (100 units = 1 mL). For laboratory research calculations only; not dosing advice.
How to use it
- 1Read your vial label. Enter how many milligrams of peptide the vial holds — or tap a product preset to fill it in.
- 2Pick how much water. Enter the bacteriostatic water you'll mix in. More water = a lower concentration and a bigger, easier-to-measure draw.
- 3Set your target dose. Enter the dose you want per draw, in micrograms. The calculator shows the exact unit mark to fill the syringe to.
- 4Read the plain-English answer. It tells you the units to draw, how many doses the vial holds, how long it lasts, and the cost per dose.
Watch: reconstituting a vial
A short walkthrough of mixing the water into the vial before you measure a dose.
Concentration
Concentration = peptide (mg) ÷ water (mL). More water means a lower concentration and a larger volume to draw for the same dose.
Units on a U-100 syringe
A U-100 insulin syringe holds 100 units per millilitre. Units to draw = dose volume (mL) × 100. Match the syringe size to your dose.
Doses per vial & cost
Doses per vial = total mcg ÷ dose. Add the vial price to see cost per dose — useful for comparing protocols across the catalog.
For laboratory research use only. This tool performs arithmetic on the values you enter and is not dosing advice.
Peptide calculator questions
- How do I use a peptide calculator?
- Enter the milligrams on the vial label, the millilitres of bacteriostatic water you add, and the dose you want in micrograms. The calculator returns the concentration, the exact units to draw on a U-100 insulin syringe, how many doses the vial holds, and the cost per dose if you add the vial price.
- How many units is 250 mcg on an insulin syringe?
- It depends on the concentration. A 10 mg vial reconstituted with 2 mL is 5 mg/mL, so 250 mcg is 0.05 mL, which is 5 units on a U-100 syringe. Change the water and the answer changes; that is what the calculator is for.
- How much bacteriostatic water should I add to a peptide vial?
- There is no single right amount; more water gives a more dilute stock and a larger, easier-to-measure draw. A common starting point is 2 mL for a 10 mg vial. The protocol page for each compound shows a concentration table per vial size we ship.
- Does the calculator work for any peptide?
- Yes. The arithmetic is the same for every lyophilized peptide: milligrams divided by millilitres gives concentration, and dose divided by concentration gives volume. Presets fill in the vial sizes for everything in the catalog.
For laboratory research calculations only; this tool performs arithmetic on the values you enter and is not dosing advice.