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Fungal Culture from Stool Sample

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

This test checks for the presence of fungi in a sample of your stool. It helps identify infections caused by yeast or mold that may be affecting your digestive system.

Quick summary

A stool fungal culture helps diagnose fungal infections in the gastrointestinal tract.

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

Key facts at a glance

LOINC
576-9
Short code
Fungus Snv Cult
Synonyms
Fungus Snv Cult
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
culture
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may recommend this test if you have symptoms like persistent diarrhea, abdominal pain, weight loss, or unexplained fatigue. It’s also used when you have a history of fungal infections or weakened immune system, or if tests for other causes of digestive issues are inconclusive.

What Does the Test Involve?

A small sample of your stool is collected and sent to a lab. The sample is grown in a controlled environment to see if fungi (like yeast or mold) are present. This process can take several days to weeks to produce results.

How Is the Test Performed?

The test involves placing your stool sample on a special growth medium in a lab setting. The lab will monitor the sample for signs of fungal growth, such as changes in color, texture, or appearance of colonies.

What Are the Possible Results?

Results can be negative (no fungi found) or positive (fungi identified). If fungi are detected, the type and characteristics of the organism will be reported to help guide treatment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Fungal infections in the stool can occur due to overgrowth of yeast (like *Candida*) or mold species. These infections may cause digestive symptoms or, in rare cases, spread to other parts of the body. Proper identification helps determine the best treatment, which may include antifungal medications.

Short name

Stool Fungal Culture

Frequently asked questions

What does a positive result mean?
A positive result means that fungi were found in your stool sample. This could indicate a fungal infection, but further testing may be needed to confirm the type of fungus and guide treatment. Your healthcare provider will discuss the next steps with you.
How long does it take to get results?
Results can take several days to weeks, depending on the lab’s processing time and the growth patterns of the fungi. Your provider will contact you once the results are ready.
Can I eat or drink before the test?
You may eat and drink normally before the test unless instructed otherwise by your healthcare provider. Avoid using laxatives or enemas unless specifically directed, as they could affect the sample.
  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