What is the first step in the diagnosis of multiple myeloma?

What is the first step in the diagnosis of multiple myeloma?

• A. Bone marrow biopsy
• B. CT scan of the abdomen
• C. Serum and urine protein electrophoresis
• D. Complete blood count

Answer: (C)

The first step in diagnosing multiple myeloma is conducting serum and urine protein electrophoresis. This laboratory test is crucial in detecting the presence of abnormal immunoglobulins and monoclonal proteins (M-proteins), which are indicative of multiple myeloma. In patients with myeloma, there is typically an overproduction of a specific type of immunoglobulin, and electrophoresis helps to assess the levels of these proteins. While other tests, such as a bone marrow biopsy, are indeed important in confirming the diagnosis and evaluating the extent of the disease, they are typically performed after initial screening with protein electrophoresis. A CT scan may be useful for assessing bone lesions associated with multiple myeloma but does not provide the specific information related to abnormal protein levels. Similarly, a complete blood count can show signs such as anemia or elevated white blood cells, but it is not specific for diagnosing multiple myeloma. In contrast, serum and urine protein electrophoresis is a targeted approach that can provide essential preliminary information required for diagnosis.

The first step in diagnosing multiple myeloma is conducting serum and urine protein electrophoresis. This laboratory test is crucial in detecting the presence of abnormal immunoglobulins and monoclonal proteins (M-proteins), which are indicative of multiple myeloma. In patients with myeloma, there is typically an overproduction of a specific type of immunoglobulin, and electrophoresis helps to assess the levels of these proteins.

While other tests, such as a bone marrow biopsy, are indeed important in confirming the diagnosis and evaluating the extent of the disease, they are typically performed after initial screening with protein electrophoresis. A CT scan may be useful for assessing bone lesions associated with multiple myeloma but does not provide the specific information related to abnormal protein levels. Similarly, a complete blood count can show signs such as anemia or elevated white blood cells, but it is not specific for diagnosing multiple myeloma. In contrast, serum and urine protein electrophoresis is a targeted approach that can provide essential preliminary information required for diagnosis.