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Fecal DNA (Quantitative) via qPCR Probe Assay (Stool Sample)

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

This test measures the presence and quantity of DNA extracted from stool samples, often used to assess microbial communities or genetic material in stool.

Quick summary

["Helps evaluate gut microbiome or detect specific genetic markers in stool samples."]

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

Key facts at a glance

LOINC
61397-6
Short code
E faecium DNA Spec Ql NAA+probe
Synonyms
E faecium 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

What Is This Test Measuring?

The test analyzes DNA extracted from stool, which can include genetic material from bacteria, viruses, fungi, or host cells. This DNA is then quantified using a specialized probe-based polymerase chain reaction (PCR) technique to detect and measure specific sequences.

Why Might You Need This Test?

This test may be used to investigate gastrointestinal health, identify infectious agents, or assess microbial diversity in stool samples, though it is not a routine screening test for most conditions.

How Is the Sample Collected?

A fresh stool sample is collected in a sterile container. The sample is then processed in the lab to extract DNA, which is analyzed for specific genetic markers or microbial presence.

What Are Common Uses?

Common applications include research studies on gut microbiomes, detecting specific pathogens (e.g., Clostridium difficile), or evaluating genetic markers associated with gastrointestinal diseases.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test provides insights into microbial composition or genetic material in stool but is not a diagnostic tool for most clinical conditions. Results may be used alongside other tests to guide further evaluation, particularly in research or specialized clinical settings.

Short name

Fecal DNA Test

Frequently asked questions

What does a positive or abnormal result mean?
An abnormal result may indicate the presence of unexpected microbial DNA or genetic markers, which could suggest infection, inflammation, or other gastrointestinal concerns. However, interpretation requires clinical correlation with patient symptoms and other diagnostic findings.
How long does it take to get results?
Results are typically available within 2–7 business days, depending on lab processing and testing complexity. Follow-up with your healthcare provider for interpretation.
Is this test covered by insurance?
Coverage depends on medical necessity, clinical indication, and insurance policies. Check with your provider or insurance company to confirm coverage before the test.
  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