What is the first step to take before administering erythropoietin treatment?

• A. Check blood glucose levels
• B. Measure serum iron and TIBC
• C. Perform a complete blood count
• D. Assess renal function

Answer: (B)

Before administering erythropoietin treatment, it is crucial to measure serum iron and total iron-binding capacity (TIBC) because erythropoietin stimulates red blood cell production in the bone marrow. Iron is an essential component of hemoglobin, so ensuring that the patient has adequate iron stores is vital for the efficacy of erythropoietin therapy. If a patient is iron deficient, erythropoietin treatment can lead to an inadequate response and may exacerbate anemia.

Assessing iron status helps determine if the patient would benefit from iron supplementation before or alongside erythropoietin treatment. This ensures that the therapy is effective and that the patient's overall hematologic parameters are optimized for the best response to treatment. Thus, measuring serum iron and TIBC is a foundational step in the management of anemia before starting erythropoietin.