Fecal DNA Quantitative Urine Leukocyte Assay (via Probe-Based Detection)
This test measures genetic material from your stool and white blood cells in urine, often used to assess inflammation or infection in the gastrointestinal tract.
["Helps diagnose or monitor gut-related conditions like inflammatory bowel disease or infections."]
Key facts at a glance
- LOINC
- 99018-4
- Short code
- E faecium DNA Ur Ql NAA+probe
- Synonyms
- E faecium DNA Ur Ql NAA+probe
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test detects fecal DNA and urinary leukocyte DNA using a specialized probe. Fecal DNA can indicate gut health, while urinary leukocytes (white blood cells) may signal inflammation or infection in the urinary tract or gastrointestinal system. This combination helps identify conditions like inflammatory bowel disease (IBD), infections, or other gut-related issues.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like persistent diarrhea, abdominal pain, unexplained weight loss, or if you’re suspected of having a gastrointestinal infection or inflammatory condition. It can also be used to monitor ongoing conditions.
Sample Collection and Preparation
A stool sample and urine sample are collected separately. The stool sample is analyzed for DNA, while the urine sample checks for leukocyte DNA. Results are processed using a molecular probe technique to detect specific genetic markers.
What the Results Mean
Results are qualitative (present/absent) rather than quantitative, meaning they indicate whether abnormal levels of DNA or leukocytes are detected. Elevated findings may suggest inflammation, infection, or other gastrointestinal issues that need further evaluation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Fecal DNA/Leukocyte Test
Frequently asked questions
Is this test painful or invasive?
How soon will I get my results?
Can I eat or drink before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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