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Immunoglobulin A (IgA) in Urine, Turbidimetric

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

This test measures the amount of Immunoglobulin A, a type of antibody found in urine, using a light-scattering method to detect its presence.

Quick summary

["IgA in urine may help identify conditions affecting kidney function or immune responses."]

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

Key facts at a glance

LOINC
111411-5
Short code
IgA Msmt Ur
Synonyms
IgA Msmt Ur
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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 Might This Test Be Ordered?

Your healthcare provider may recommend this test if you have symptoms like frequent urinary tract infections, blood in urine, or signs of kidney issues. It can also be part of evaluating immune system disorders or monitoring conditions like lupus or IgA nephropathy.

What to Expect During the Test

You’ll provide a urine sample, typically collected in a clean container. The sample is then analyzed in a lab to measure IgA levels. No special preparation is needed, but avoid certain medications or foods that might interfere with results.

Common Conditions Monitored

This test is often used to monitor conditions like recurrent urinary tract infections, kidney diseases (such as IgA nephropathy), or immune-related disorders. It helps track how well your body is producing IgA and whether it’s being filtered properly by your kidneys.

Factors That Could Affect Results

Certain medications, infections, or kidney problems can influence IgA levels. For example, some antibiotics or immune-suppressing drugs might alter results. If you’re unsure about recent medications or health changes, discuss them with your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Urine IgA

Frequently asked questions

What Does a High or Low IgA Level Mean?
Elevated IgA levels in urine may suggest kidney issues, such as IgA nephropathy, or immune disorders. Low levels might indicate immune deficiencies or certain infections. Your provider will interpret results in the context of your overall health and symptoms.
How Often Should I Get This Test?
The frequency depends on your condition. If you have a known kidney or immune disorder, your provider may recommend regular testing. Otherwise, this test is usually ordered as needed for specific symptoms or evaluations.
Can I Prepare for This Test?
No special preparation is needed, but avoid excessive fluid intake before the test if instructed by your provider. If you’re pregnant, have kidney disease, or take certain medications, let your healthcare team know.
  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