The healthcare provider prescribes cefazolin 800 mg IM every 6 hours. The available vial is labeled, "Cefazolin 1 gram," and instructions for reconstitution state, "For IM use, add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL. How many mL should the nurse administer? (Enter numerical value only. It rounding is required, round to the nearest tenth.)

Given Information: Prescribed dose: 800 mg Vial label: 1 gram (1000 mg) Volume after reconstitution: 3.0 mL Determine the concentration of the reconstituted solution Concentration = Amount in vial / Volume after reconstitution Concentration = 1000 mg / 3.0 mL = 333.33 mg/mL Calculate the volume of cefazolin to be administered Volume to be administered = Prescribed dose / Concentration Volume to be administered = 800 mg / 333.33 mg/mL = 2.4 mL