: Urine Protein Electrophoresis

: What This Test Measures

: Your urine normally contains only small amounts of protein. This test separates the proteins present in a urine sample by size and electrical charge, then reports the relative amounts of each protein fraction. The resulting pattern can help distinguish proteins that are expected from those that may signal a health problem.

: Why It May Be Ordered

: Your clinician may order this test when urine protein testing is abnormal, when a monoclonal protein is suspected, or when evaluating kidney or blood-related conditions. It is often used together with blood protein electrophoresis and other lab work to build a fuller picture.

: How the Sample Is Collected

: A urine sample is typically collected at a lab, and in some cases a 24-hour urine collection may be requested. Follow the instructions your care team provides for collection timing, storage, and any preparation steps.

: Understanding Your Results

: Results are reported as protein fractions and a pattern rather than a single pass/fail value. Because reference ranges and interpretation methods vary by laboratory, your clinician will interpret the pattern in the context of your symptoms, other tests, and history. Ask what your specific report means for you.