Mrs Eckstein Is in the Office Because Her Rheumatoid Arthritis

Mrs. Eckstein is in the office because her rheumatoid arthritis has been flaring up lately and she is in considerable pain. The physician asks you to administer a 20 mg IM injection of Depo-Medrol. The available medication is a 5 mL multidose vial that provides 40 mg/ mL. How much will you inject?

A) 0.25 mL
B) 0.5 mL
C) 1 mL
D) 1.5 mL
E) 2 mL