The following plasma and urine electrophoresis results were obtained from a 70-year-old man who complained to his doctor of back pain that he had had for several months and of feeling generally unwell. This patient most likely has:

Question

The following plasma and urine electrophoresis results were obtained from a 70-year-old man who complained to his doctor of back pain that he had had for several months and of feeling generally unwell.  This patient most likely has:

Quizplus · Accepted Answer

Bence Jones proteins are loose immunoglobulin light chains that are formed by some patients with multiple myeloma, in addition to the complete immunoglobulin that forms the band at the right end of the patient's plasma electrophoresis.Bence Jones proteins are small enough to be filtered into the urine very fast, forming the right band in the patient's urine.Because of renal excretion, they are not abundant in the plasma.Because the glomerular basement membrane becomes compromised in this condition, some albumin also appears in the urine.

The Following Plasma and Urine Electrophoresis Results Were Obtained from a 70-Year-Old