Alpha-2 Globulin, Urine — Electrophoresis, Mass Fraction
A urine protein electrophoresis test that estimates the fraction of urinary protein in the alpha-2 globulin band.
["This test measures the proportion of protein in your urine that is classified as alpha-2 globulin."]
Key facts at a glance
- LOINC
- 13993-1
- Short code
- Alpha2 Glob MFr Ur Elph
- Synonyms
- Alpha2 Glob MFr Ur Elph
- Category
- liver
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 44
- Ref high
- 147
- Critical range
- 7.2 N/A – 7.6 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- electrophoresis
- CPT
- 84075
- SNOMED
- 27550007
- 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
What is this test?
This test uses urine protein electrophoresis to separate urinary proteins into groups. It estimates the mass fraction, or relative proportion, of protein in the alpha-2 globulin group.
Why might I need this test?
It may be ordered as part of an evaluation of protein in the urine, abnormal kidney function, or suspected kidney disease. It is usually interpreted with other urine tests, including total urine protein and creatinine.
How is the test performed?
A urine specimen is analyzed by electrophoresis, which separates proteins according to their electrical properties. The laboratory then estimates how much of the detected protein belongs to the alpha-2 globulin fraction.
How do I prepare for the test?
Fasting is generally not required. Collect the urine using the container and collection schedule provided by your clinician or laboratory; if a timed or 24-hour collection is ordered, include all urine for the specified period.
Reference range
Adult: 44-147 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
An increased or decreased alpha-2 globulin fraction may reflect changes in urinary protein production, filtration, or reabsorption. These changes can occur with several kidney or systemic conditions, so the result should be interpreted with the rest of your urine studies and your clinical history. A single result does not by itself establish a diagnosis.
Short name
Urine Alpha-2 Globulin
Frequently asked questions
What does the alpha-2 globulin fraction measure?
Does this test diagnose kidney disease?
Do I need to fast for this urine test?
Sources
- 1
- 2Lab Tests OnlineSource
- 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