What is this test?
Urine protein electrophoresis separates proteins by their movement in an electric field. The pattern can help distinguish types of protein loss and look for an abnormal monoclonal protein.
Why might it be ordered?
- To investigate unexplained protein in urine or a possible plasma-cell disorder.
- To follow a known abnormal protein when a specialist requests it.
What sample is needed?
The laboratory may require a spot or 24-hour urine collection. Confirm the exact sample type and container before starting.
How should you prepare?
Follow the specified collection method carefully. Do not begin a 24-hour collection unless the laboratory has confirmed that it is required.
How should you understand the result?
The pattern may need confirmation with immunofixation and comparison with blood tests. A negative result does not exclude every small or intermittent abnormal protein.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.