An abnormal protein of the immunoglobulin series. Paraproteins appear in malignant disease of the spleen, bone marrow, liver, etc. Examples of paraproteins are myeloma globulins, macroglobulin, and Bence-Jones protein.
An abnormal plasma protein, such as a macroglobulin, cryoglobulin, or immunoglobulin.
An abnormal immunoglobulin known as M-protein, which is generated in individuals with multiple myeloma.