Alpha-2 Globulin, 24-Hour Urine — Electrophoresis, Qualitative
A 24-hour urine test that uses electrophoresis to identify the presence of an alpha-2 globulin protein fraction.
["This test evaluates whether alpha-2 globulin, a type of protein, is present in urine collected over 24 hours."]
Key facts at a glance
- LOINC
- 29947-9
- Short code
- Alpha2 Glob 24h Ur Ql Elph
- Synonyms
- Alpha2 Glob 24h Ur Ql 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 laboratory test uses electrophoresis to examine a 24-hour urine sample for the presence of an alpha-2 globulin protein fraction. It is a qualitative test, meaning it reports whether the fraction is detected rather than providing a specific concentration.
Why might I need this test?
Your clinician may order this test as part of an evaluation of protein in the urine, especially if you have symptoms of kidney disease, reduced urine output, swelling, or other findings that suggest possible kidney or immune-related problems.
How is the test performed?
You collect all urine for a full 24-hour period in the container provided by the laboratory. The laboratory then separates urine proteins by electrophoresis and evaluates the sample for the alpha-2 globulin fraction.
How do I prepare for the test?
Follow the laboratory's collection instructions exactly, including the starting time, ending time, and any restrictions on urine volume or medication use. Keep the container refrigerated if instructed and return the complete sample with the required information.
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.
Detection of alpha-2 globulin in urine may be associated with increased urinary protein excretion, which can occur with kidney inflammation, impaired kidney filtration, or certain immune-related conditions. Results must be interpreted with the rest of the urinalysis, kidney function tests, and your medical history because urine protein patterns are not specific to one diagnosis.
Short name
24-Hour Urine Protein Electrophoresis
Frequently asked questions
Does this test measure kidney function directly?
Why is a 24-hour urine collection needed?
What if the alpha-2 globulin fraction is not detected?
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