Abnprotmfrurelph
This test analyzes the proteins in your urine to detect abnormal protein bands that may indicate kidney problems or blood cell disorders.
{"A simple urine test that separates and identifies different protein types","Helps diagnose conditions like multiple myeloma and kidney disease","Results show if abnormal proteins are present in your urine","No special preparation is needed beyond collecting a clean urine sample","Abnormal results may require additional testing to determine the cause"}
Key facts at a glance
- LOINC
- 50408-4
- Short code
- UPEP
- Synonyms
- Abn Prot MFr Ur Elph
- Category
- chemistry
- Sample
- urine
- Container
- Clean-catch urine container, sterile polypropylene container
- Units
- N/A
- Ref low
- 0
- Ref high
- 100
- Critical range
- 7.2 N/A – 7.6 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–120 years
- Method
- electrophoresis
- CPT
- 82044
- SNOMED
- 314632009
- Specimen volume
- 10-50 mL of urine
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 72 hours; Frozen (-20°C): 2 weeks. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 48–96 hours
- Order
- routine
What is this test?
Urine protein electrophoresis (UPEP) is a laboratory test that separates the different proteins in your urine to identify abnormal protein bands. Normally, urine contains very small amounts of protein. When abnormal proteins or increased amounts of protein are found in urine, it may indicate an underlying health condition. The test uses an electrical current to separate proteins based on their size and electrical charge, creating a pattern that healthcare providers can analyze.
Why is it ordered?
This test is typically ordered when a routine urine test shows high protein levels (proteinuria). It helps determine the source and type of protein causing the abnormality. The test is particularly useful for detecting proteins produced by abnormal plasma cells, such as in multiple myeloma, or for identifying kidney disorders that affect protein filtration.
How is it performed?
You will provide a urine sample, usually collected in a sterile container. For the most accurate results, a first-morning sample is often preferred as it is more concentrated. The laboratory then applies the urine to a special gel and applies an electrical current to separate the proteins. The resulting pattern is compared to normal patterns to identify any abnormal bands.
Reference range
Normal: <100 pg/mLN/A
No fasting required. Collect a clean-catch, midstream urine sample. Inform patient to avoid strenuous exercise 24 hours before collection as this may cause transient proteinuria. Collect first morning specimen preferred for most accurate results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings2
Frequently asked questions
Does this test hurt?
Do I need to fast before the test?
How long does it take to get results?
What does it mean if I have protein in my urine?
Will I need additional tests if my results are abnormal?
Sources
- 1
- 2
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy