Monoclonal Band

**Semantic type:** Laboratory or Test Result

**Definition:** Monoclonal immunoglobulin or monoclonal light chain that is present in the serum and/or urine. It is the result of a clonal B-cell or plasma cell proliferation.

**Synonyms:** - M Protein Present - M Spike Present - M-Band - M-Band Present - M-Protein - M-Protein Present - M-Spike - M-Spike Present - Monoclonal Band Present - Monoclonal Protein Detected - Monoclonal Protein Positive - Monoclonal Protein Present - Monoclonal Spike - Monoclonal Spike Present - Paraprotein Present