A patient requires 1.5 g of ceftriaxone IM. The vial contains 2 g of ceftriaxone mixed in 10 mL of solution. How many mL should the nurse administer?

Identify the ordered dose and available concentration Ordered Dose: 1.5 g Available Concentration: 2 g/10 mL Calculate the volume to administer Volume to administer = (Ordered Dose ÷ Available Dose) × Available Volume Volume to administer = (1.5 ÷ 2) × 10 Volume to administer = 0.75 × 10 = 7.5 mL