What role does M protein play in the diagnosis of multiple myeloma?

M protein, also known as monoclonal protein, plays an important role in diagnosing multiple myeloma. Multiple myeloma is a cancer of plasma cells, which are a type of white blood cell that normally helps fight infections. In this disease, cancerous plasma cells produce an abnormal protein called M protein.

How M Protein Helps in Diagnosis:

1. Detection: Doctors look for M protein in the blood or urine to help diagnose multiple myeloma. High levels of this protein can indicate the presence of the disease.
2. Monitoring: Once diagnosed, the amount of M protein is also used to monitor the disease's progression and response to treatment.

By measuring M protein levels, doctors can not only confirm a diagnosis but also keep track of how well a patient is responding to treatment. This makes M protein a very important tool in managing multiple myeloma.