Mrs. Eckstein is in the office because her rheumatoid arthri…

Mrs. Eckstein is in the office because her rheumatoid arthritis has been flaring up lately and she is in considerable pain. The licensed practitioner 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?