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Eosinophil count in stool (qualitative)

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

This test checks for the presence of eosinophils, a type of white blood cell, in your stool. Eosinophils may indicate certain inflammatory or allergic conditions in the digestive tract.

Quick summary

["Eosinophils in stool can signal gut inflammation or allergy-related issues."]

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

Key facts at a glance

LOINC
56921-0
Short code
E histolyt Ab Ser Ql IF
Synonyms
E histolyt Ab Ser Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
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

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms like persistent diarrhea, abdominal pain, or unexplained weight loss, especially if other tests (like blood work or endoscopy) haven’t identified a cause. It can also help evaluate conditions such as eosinophilic gastroenteritis or food allergies affecting digestion.

What to Expect Before the Test

No special preparation is usually needed. You may be asked to collect a fresh stool sample in a clean container. If you’re using a stool collection kit, follow the instructions provided to ensure accuracy.

How the Test Works

The test involves examining a small sample of your stool under a microscope to count and identify eosinophils. This qualitative method detects their presence rather than measuring exact numbers.

Common Conditions Evaluated

This test helps diagnose or monitor conditions like eosinophilic esophagitis, inflammatory bowel disease (IBD), or allergic reactions causing gastrointestinal symptoms. It may also be used in research or specialized cases where eosinophil levels in stool are relevant.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Eosinophils are typically low in healthy stool samples. Elevated levels may suggest chronic inflammation, allergic reactions, or immune-mediated disorders affecting the digestive system. While not definitive, positive results can guide further testing or treatment decisions.

Short name

Stool eosinophil test

Frequently asked questions

What does a positive result mean?
A positive result means eosinophils were detected in your stool sample, which may indicate inflammation, allergy, or another underlying condition affecting your digestive system. Your doctor will discuss next steps based on your symptoms and test results.
How soon will I get results?
Results are usually available within a few days to a week, depending on lab processing times. Your healthcare provider will contact you once they’re ready.
Can I take medications before the test?
You may be advised to avoid certain medications (like steroids or blood thinners) before the test, depending on your condition. Always follow your doctor’s instructions or lab guidelines.
  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