How many units is 100 mcg from a 2 mg vial with 2 mL of water?
2 mg ÷ 2 mL = 1 mg/mL (1000 mcg/mL). 100 mcg ÷ 1000 mcg/mL = 0.1 mL. On a U-100 syringe that is 10 units (U-50: 5, U-40: 4). The vial holds 20 draws of that size.
The math
Concentration = 2 mg ÷ 2 mL = 1 mg/mL Volume = 100 mcg ÷ 1000 mcg/mL = 0.1 mL Units (U-100) = 0.1 × 100 = 10
Math only, not medical advice. This page converts numbers; it does not recommend any compound or amount.
Draw to
10 units
= 0.1 mL · concentration 1 mg/mL (1000 mcg/mL) · 20 draws per vial
Concentration = 2 mg ÷ 2 mL = 1 mg/mL Volume = 100 mcg ÷ 1000 mcg/mL = 0.1 mL Units = 0.1 mL × 100 (U-100) = 10 units
Math only, not medical advice. Verify every number yourself.