A provider orders 500 mg of a medication and the vial is labeled 250 mg per mL. How many mL should be drawn up?

Giải thích

Using desired dose divided by dose on hand, 500 mg divided by 250 mg per mL equals 2 mL. Drawing 0.5 mL or 1 mL would give only 125 mg or 250 mg, a serious underdose. Drawing 5 mL would deliver 1,250 mg, more than double the ordered amount, so careful calculation and a second check are essential.