Which of the following substances has abnormal values early in the course of multiple myeloma (MM)?
A. Red blood cells
B. Immunoglobulins
C. White blood cells
D. Platelets
Correct Answer: B. Immunoglobulins
Option B: MM is characterized by malignant plasma cells that produce an increased amount of immunoglobulin that isn’t functional.
Option A: As more malignant plasma cells are produced, there’s less space in the bone marrow for RBC production.
Options C and D: In the late stage of the disease, platelets and WBC’s are reduced as the bone marrow is infiltrated by malignant plasma cells.
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