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Enterocyte IgA (Immunoglobulin A) in Stool

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

This test measures Immunoglobulin A (IgA), a type of antibody found in the digestive tract, to help assess immune function in the gut.

Quick summary

["IgA in stool helps check gut immunity and possible infections."]

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

Key facts at a glance

LOINC
69031-3
Short code
Enterocyte IgA Ser Ql
Synonyms
Enterocyte IgA Ser Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Does This Test Measure?

IgA is part of the body’s immune system, helping protect the intestines from harmful bacteria and viruses. This test looks at IgA levels in stool samples to evaluate gut immunity, detect infections, or identify conditions like celiac disease or inflammatory bowel disease.

Why Might You Need This Test?

Your doctor may order this test if you have symptoms like chronic diarrhea, unexplained weight loss, or signs of gut inflammation. It can also help diagnose conditions where the gut’s immune response is abnormal.

How Is the Test Performed?

A small stool sample is collected (often via a bowel movement) and sent to a lab. The sample is tested for IgA levels using a specialized immunoassay method to detect antibody presence.

What Are Possible Results?

Results are qualitative (present or absent) rather than numeric, indicating whether IgA is detected in the stool. Abnormal results may suggest immune dysfunction or infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Stool IgA (Enterocyte IgA)

Frequently asked questions

What causes abnormal IgA in stool?
Abnormal IgA in stool may be linked to infections (e.g., bacterial or viral), inflammatory bowel disease, celiac disease, or immune system disorders. Your doctor will consider symptoms and other test results for diagnosis.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up with your healthcare provider for interpretation.
Can I take anything special before the test?
No special preparation is needed, but avoid using stool softeners or laxatives unless instructed. Collect a fresh sample if possible for accurate results.
  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