Peptide Reconstitution Calculator

It depends on the concentration. At 5 mg/mL (10 mg in 2 mL), 0.25 mg is 0.05 mL, which is 5 units on a U-100 syringe. Enter your own numbers above to see yours.

A U-100 insulin syringe is marked in units where 100 units equal 1 mL. Common sizes are 0.3 mL (30 units), 0.5 mL (50 units) and 1 mL (100 units).

That's your choice; the calculator doesn't recommend an amount. More liquid lowers the concentration, which makes each draw larger and easier to measure. Less liquid makes each draw smaller.

Yes. Switch the vial or dose unit to mcg. 1 mg = 1,000 mcg.

Find the concentration (mg in the vial ÷ mL of water added), divide your amount by it to get mL, then multiply by 100 for units on a U-100 syringe. 0.5 mg from a 10 mg vial with 2 mL of water: 10 ÷ 2 = 5 mg/mL; 0.5 ÷ 5 = 0.1 mL; 0.1 × 100 = 10 units.

250 mcg is 0.25 mg. At 5 mg/mL (10 mg in 2 mL) that's 5 units; at 2.5 mg/mL (5 mg in 2 mL) it's 10 units; at 10 mg/mL (10 mg in 1 mL) it's 2.5 units.

A peptide calculator works out the concentration of a reconstituted vial and how much liquid holds a given amount, shown in mL and in units on an insulin syringe. It's the same arithmetic you'd do by hand, without the room for slips.

No. Units measure volume, and mg measure weight, so the conversion depends on how much is dissolved in each mL. To convert units to mL only, use the mg to units converter: on a U-100 syringe, 100 units = 1 mL.