A nurse is caring for a client who has been taking epoetin alfa for 3 months.Which of the following laboratory tests should the nurse monitor to determine the effectiveness of the medication?

Choice A rationale:AST (Aspartate Aminotransferase) is a liver enzyme and its levels are used to assess liver function, not the effectiveness of epoetin alfa.Choice B rationale:Troponin is a cardiac marker used to diagnose heart attacks. It has no relation with the effectiveness of epoetin alfa.Choice C rationale:T4 (Thyroxine) is a thyroid hormone. Its levels indicate thyroid function, not the effectiveness of epoetin alfa.Choice D rationale:Hgb (Hemoglobin) levels are used to assess the effectiveness of epoetin alfa. Epoetin alfa is a medication that stimulates the production of red blood cells, thereby increasing hemoglobin levels in the blood. Normal hemoglobin levels are 13.5 to 17.5 g/dL in men and 12.0 to 15.5 g/dL in women.