A nurse is preparing to administer fentanyl 50 mcg IM to a client. Available is fentanyl 0.05 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Convert milligrams (mg) to micrograms (mcg). Available concentration = 0.05 mg/mL 1 mg = 1000 mcg Available concentration in mcg/mL = 0.05 mg/mL × 1000 mcg/mg = 50 mcg/mL. Desired dose = 50 mcg. Calculate the volume in milliliters (mL) to administer per dose. Volume (mL) = Desired dose (mcg) / Available concentration (mcg/mL) = 50 mcg / 50 mcg/mL = 1 mL.