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Fungal DNA in Stool by Qualitative Probe (PCR-based)

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

This test checks for genetic material from fungi in your stool using a specialized DNA probe. It helps identify possible fungal infections in your digestive system.

Quick summary

["Assists in diagnosing fungal infections in the gut with a simple stool sample and DNA detection method."]

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

Key facts at a glance

LOINC
105685-2
Short code
Fungus DNA Spec Ql NAA+probe
Synonyms
Fungus DNA Spec Ql NAA+probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
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 healthcare provider may recommend this test if you have symptoms like persistent diarrhea, unexplained weight loss, or signs of an immune system issue that could make you more susceptible to fungal infections. It’s also used in patients with conditions like HIV/AIDS, cancer, or those taking medications that weaken the immune system.

How the Test Works

A small sample of your stool is collected and analyzed using a polymerase chain reaction (PCR) technique. This method detects tiny amounts of fungal DNA, even if the fungi aren’t yet visible under a microscope.

Sample Collection

You’ll need to provide a fresh stool sample, ideally collected in a sterile container. Follow your healthcare provider’s instructions for proper sample handling to ensure accurate results.

What to Expect After the Test

Results are typically available within a few days. If fungal DNA is found, your provider may recommend further testing or treatment to address the infection. If no DNA is detected, it doesn’t rule out fungal infection entirely—other diagnostic methods may still be needed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Fungal DNA Stool Test (Qualitative)

Frequently asked questions

What Does a Positive Result Mean?
A positive result indicates the presence of fungal DNA in your stool, suggesting a possible fungal infection. This could include conditions like candidiasis (yeast infection) or other opportunistic fungal infections, especially in individuals with weakened immune systems.
What Does a Negative Result Mean?
A negative result means no fungal DNA was detected in this sample. However, it doesn’t guarantee you don’t have a fungal infection. Other tests or imaging may still be needed to diagnose the condition fully.
How Often Should I Get This Test?
This test is usually ordered as needed, depending on your symptoms or medical condition. Your healthcare provider will determine the best timing and frequency for repeat testing based on your individual situation.
  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