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Escherichia coli (E. coli) bacterial DNA in urine by probe-based nucleic acid amplification test

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

This test checks for the presence of genetic material from *Escherichia coli* bacteria in your urine, which may indicate an infection.

Quick summary

["Detects potential urinary tract infection (UTI) caused by E. coli bacteria using genetic testing."]

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

Key facts at a glance

LOINC
99027-5
Short code
P aerugns DNA Ur Ql NAA+probe
Synonyms
P aerugns 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

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like frequent urination, pain or burning during urination, cloudy or strong-smelling urine, or if you’ve been diagnosed with a urinary tract infection (UTI) and symptoms persist or recur. It may also be used to confirm or monitor suspected infections in certain clinical settings.

How the Test Works

The test uses a specialized probe to detect genetic material (DNA) from *E. coli* bacteria in your urine sample. This method is highly sensitive and can identify the presence of the bacteria even if they are not growing in the lab, which helps confirm infection earlier than traditional culture methods.

Sample Collection and Preparation

You will provide a urine sample, typically collected in a clean container. The sample is then processed to extract DNA, which is analyzed for the presence of *E. coli* genetic markers. No special preparation is needed, but avoid urinating right before the test if possible.

What to Expect After the Test

Results are usually available within a few days. If the test is positive, it suggests the presence of *E. coli* in your urine, which may require treatment with antibiotics. Follow-up may include additional tests or monitoring to ensure proper recovery.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

E. coli DNA in urine

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of *Escherichia coli* DNA in your urine, strongly suggesting a urinary tract infection (UTI) caused by this bacterium. This can help guide treatment decisions, such as starting appropriate antibiotic therapy.
What does a negative result mean?
A negative result means no detectable *E. coli* DNA was found in your urine sample. However, other bacteria or non-infectious causes of symptoms may still be present, so further evaluation may be needed if symptoms persist.
Can this test replace a urine culture?
No, this test detects genetic material but does not identify the specific strain of *E. coli* or other bacteria. A urine culture may still be recommended to confirm the type of bacteria and guide antibiotic selection, especially if symptoms are severe or recurrent.
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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