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Alpha-2 Globulin, Urine — Electrophoresis, Mass Fraction

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

Measures the relative amount of alpha-2 globulin in urine using protein electrophoresis to help evaluate abnormal urinary protein patterns.

Quick summary

["This test helps determine whether alpha-2 globulin makes up an unusual portion of protein found in your urine."]

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

Key facts at a glance

LOINC
17813-7
Short code
Alpha2 Glob ?Tm MFr Ur Elph
Synonyms
Alpha2 Glob ?Tm 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 laboratory test measures alpha-2 globulin in urine and reports its mass fraction, meaning its relative share of the detected urinary protein. It is generally part of urine protein electrophoresis.

Why might I need this test?

Your clinician may order this test when urine testing shows protein in the urine or when symptoms suggest a kidney, liver, or inflammatory condition. It helps characterize the type of protein being lost in the urine.

How is the test performed?

A urine specimen is separated by electrophoresis so that different protein groups can be identified and measured. The laboratory then reports the fraction of total urine protein represented by alpha-2 globulin.

How do I prepare for the test?

Follow your clinician or laboratory instructions for urine collection. Some tests use a single urine sample, while others require a timed collection such as a 24-hour collection; the collection method can affect how the result is interpreted.

Reference range

Adult: 44-147 U/LN/A

Specimen: urine

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine alpha-2 globulin electrophoresis

Frequently asked questions

Does this test diagnose a specific condition?
No. It describes the amount of alpha-2 globulin relative to other urinary proteins and must be interpreted alongside the rest of your laboratory results.
What does a mass fraction mean?
It is the proportion of measured urine protein that is identified as alpha-2 globulin rather than an absolute concentration of that protein.
How will I receive my results?
Your clinician will review the result in the context of your symptoms, other urine tests, and kidney or liver function tests and will explain whether any follow-up is needed.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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