A veterinarian prescribes for a 35 g mouse a 2 mg/kg dose. The medicine strength is 0.1 mg/mL. How many mL will you administer?

A veterinarian prescribes for a 35 g mouse a 2 mg/kg dose. The medicine strength is 0.1 mg/mL. How many mL will you administer?

• A. 0.35 mL
• B. 0.2 mL
• C. 0.7 mL
• D. 1.7 mL

Answer: (C)

To determine the amount to administer, convert the mouse’s weight to kilograms, calculate the total dose in milligrams, then convert that dose to milliliters using the strength. Weight in kg: 35 g = 0.035 kg. Total dose needed: 0.035 kg × 2 mg/kg = 0.07 mg. Volume to give: 0.07 mg ÷ (0.1 mg/mL) = 0.7 mL. So you would administer 0.7 mL.

To determine the amount to administer, convert the mouse’s weight to kilograms, calculate the total dose in milligrams, then convert that dose to milliliters using the strength.

Weight in kg: 35 g = 0.035 kg.

Total dose needed: 0.035 kg × 2 mg/kg = 0.07 mg.

Volume to give: 0.07 mg ÷ (0.1 mg/mL) = 0.7 mL.

So you would administer 0.7 mL.