Calculate the amount to administer:____________ (Round decimal appropriately) Ordered: Imitrex 8 mg subcut prn headache On hand: Imitrex injection 6 mg/0.5 mL

Desired dose = 8 mg. Concentration of the available medication = 6 mg in 0.5 mL. Concentration = 6 mg / 0.5 mL = 12 mg/mL. Calculate the volume in milliliters (mL) to administer. Volume (mL) = Desired dose (mg) / Concentration (mg/mL) = 8 mg / 12 mg/mL = 0.6666... mL. Rounding to the nearest hundredth = 0.67 mL.