The healthcare provider prescribes interferon beta-1b 0.25 mg SUBQ every other day for a client with multiple sclerosis. The nurse reconstitutes the single-use vial of powder labeled, "0.3 mg with 1.2 mL of sterile water." How many mL should the nurse administer to the client? (Enter the numerical value only.)

Calculation: Determine the concentration of the reconstituted solution: Concentration (mg/mL) = Total amount of drug (mg) / Total volume after reconstitution (mL) = 0.3 mg / 1.2 mL = 0.25 mg/mL Identify the prescribed dose = 0.25 mg Calculate the volume to administer: Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL) = 0.25 mg / 0.25 mg/mL = 1 mL