Protein Electrophoresis, Serum

Serum protein electrophoresis is a blood test that separates the proteins in your blood into groups to see if any are abnormally high or low. Doctors use it to look for signs of certain blood cancers (like multiple myeloma), immune system problems, liver disease, or nutritional deficiencies. An unusual spike or dip in one of the protein groups may prompt additional testing to find the underlying cause. This test is a screening tool, and abnormal results do not automatically mean a serious diagnosis—your doctor will consider the full picture of your health.

When elevated: Elevated gamma globulin fraction (polyclonal) may indicate chronic inflammation, autoimmune disease, chronic liver disease, or chronic infection. A discrete monoclonal spike suggests a plasma cell or lymphoproliferative disorder such as MGUS, multiple myeloma, or Waldenström macroglobulinemia, and requires further characterization. Elevated alpha-2 globulins are associated with acute-phase responses, nephrotic syndrome, or hemolysis. When low: Decreased albumin (hypoalbuminemia) is associated with malnutrition, liver disease, nephrotic syndrome, protein-losing enteropathy, or chronic illness. Low gamma globulin levels (hypogammaglobulinemia) may indicate primary or secondary immunodeficiency, including common variable immunodeficiency or immunosuppressive therapy effects. Reduced total protein may reflect malabsorption, severe malnutrition, or protein-losing states.

SPEP is not a routine athletic performance or recovery marker. It's primarily a diagnostic tool for detecting plasma cell disorders, chronic infections, or inflammatory diseases—conditions that would impair training capacity and warrant medical evaluation rather than serve as a training metric. Athletes might encounter this test if experiencing unexplained fatigue, recurrent illness, or as part of investigation into chronic inflammatory conditions.