Question

A physician orders 0.4mg of a drug. The label on the vial states

that the concentration is 500mcg per 2mL. How many mL of the drug
should be dispensed?

Answer 1

To dispense 0.4 mg of the drug, 0.8 mL should be dispensed.

Step-by-step explanation:

To find the amount of drug that should be dispensed, we can use the formula C1V1 = C2V2, where C1 is the concentration of the drug in the vial, V1 is the volume to be dispensed, C2 is the desired concentration, and V2 is the desired volume. In this case, C1 = 500 mcg/2 mL, C2 = 0.4 mg, and V2 = V1. Solving for V1, we have:

C1V1 = C2V2

(500 mcg/2 mL)V1 = 0.4 mg

V1 = (0.4 mg)(2 mL)/(500 mcg) = 0.8 mL

Answer: 0.8 mL