Urine Protein Electrophoresis Test - Urine Protein Electrophoresis (UPEP)

Urine protein electrophoresis (UPEP) is a laboratory technique that separates proteins in a concentrated urine sample (usually a 24-hour sample) based on their size and electrical charge. It is primarily used to detect and quantify monoclonal protein in urine, historically known as Bence Jones protein, which consists of immunoglobulin light chains and is seen in plasma cell proliferation disorders.