The healthcare provider prescribes cyanocobalamin injection 100 mcg IM every 3 days for a client with pernicious anemia. The vial is labeled, "1 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Here's how to calculate the volume the nurse should administer: 1. Dose of cyanocobalamin (vitamin B12): 100 mcg 2. Concentration of cyanocobalamin in the vial: 1 mg/mL (given on the vial label) We need to find the volume (in mL) that contains the prescribed dose (100 mcg) of cyanocobalamin. Calculation: Volume to administer (mL) = Dose (mcg) / Concentration (mcg/mL) Note: Since both the medication dose and concentration are given in mcg units, we can directly perform the calculation without converting units. Volume to administer (mL) = 100 mcg / 1 mg/mL Conversion: 1 mg is equal to 1000 mcg. Therefore, 1 mg/mL is the same as 1000 mcg/mL. Volume to administer (mL) = 100 mcg / (1000 mcg/mL) Volume to administer (mL) = 0.1 mL (round to nearest tenth as requested) Therefore, the nurse should administer approximately 0.1 mL of the cyanocobalamin injection.