paraprotein

[ păr′ə-prōtēn′ ]

n.

An abnormal plasma protein, such as a macroglobulin, cryoglobulin, or myeloma protein.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.