Which of the following tests is typically performed as part of the prep for Sr-89 Chloride therapy?

The choice of a complete blood count as part of the preparation for Sr-89 Chloride therapy is essential because it provides important information about the patient’s overall hematological status. Sr-89 Chloride is a radiopharmaceutical used in the treatment of pain from bone metastases, and it can have effects on blood cell production due to its impact on bone marrow.

A complete blood count assesses various components of the blood, including red blood cells, white blood cells, and platelets. Understanding the levels of these components before implementing the therapy allows healthcare providers to monitor for potential side effects, such as thrombocytopenia or leukopenia, which could complicate the patient's treatment and management. This test helps ensure that the patient has adequate blood cell levels to tolerate the therapy safely.

In contrast, the other tests listed—electrocardiogram, X-ray imaging, and urine tests—do not directly assess the patient's suitability for Sr-89 therapy from a hematological perspective. While they may be useful in other clinical contexts, they do not provide the critical information needed regarding blood cell counts, which is vital for safely proceeding with this specific therapy.