A nurse is preparing to administer cyanocobalamin 100 mcg IM monthly. Available is cyanocobalamin injection 000 mcg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

The nurse should administer 0.1 mL of cyanocobalamin injection per dose. Here's the breakdown: Desired dose: 100 mcg Concentration of available cyanocobalamin injection: 1,000 mcg/mL (note: we use 1,000 instead of 1.000 for easier calculation) To find the volume to administer, we can divide the desired dose by the concentration and round to the nearest tenth: Volume to administer (rounded to nearest tenth) = Dose / Concentration = 100 mcg / 1,000 mcg/mL = 0.1 mL (rounded to nearest tenth) Therefore, the nurse should administer 0.1 mL of the cyanocobalamin injection.