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Urinalysis with Protein Electrophoresis (Quantitative Protein Fractionation)

Published: August 9, 2026Updated: August 16, 2026

This test measures different types of proteins in your urine using electrophoresis, a method that separates proteins based on size and charge. It helps identify abnormal protein patterns that may indicate kidney disease or other conditions.

Quick summary

["This test helps diagnose kidney problems or conditions affecting protein levels in urine."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
51437-2
Short code
M Protein 2 Ur Elph-mCnc
Synonyms
M Protein 2 Ur Elph-mCnc
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
electrophoresis
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like frequent urination, swelling in your legs or ankles, foamy urine, or if you have a history of kidney disease. It can also be part of routine screening for certain conditions or after an injury.

What to Expect Before the Test

No special preparation is needed. You’ll provide a urine sample, typically collected in the morning. Avoid excessive protein-rich foods or drinks for 24 hours before testing if instructed by your provider.

How the Test Works

Your urine is analyzed using electrophoresis, which separates proteins into bands. Different bands represent various protein types, such as albumin, globulins, and other fragments. This helps identify abnormal patterns.

Possible Results and Interpretation

Abnormal results may show excess proteins (like albumin) in urine, which can signal kidney damage or disease. Your provider will discuss findings with you based on your symptoms and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is critical for detecting kidney-related conditions, such as nephrotic syndrome, glomerulonephritis, or diabetic nephropathy. Elevated protein levels in urine can also indicate inflammation, infection, or metabolic disorders.

Short name

Protein Urine Profile

Frequently asked questions

What does a high or low protein result mean in this test?
A high protein result may suggest kidney issues, such as damage to the filtering units (glomeruli) or other systemic conditions. A low result may indicate normal protein excretion or certain metabolic conditions. Your provider will interpret results in the context of your overall health.
Does this test require fasting?
No, fasting is not required for this test. However, follow any specific instructions your healthcare provider gives you, such as avoiding certain foods or fluids before sample collection.
How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on your lab’s processing time. Your provider will contact you once the results are ready for discussion.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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