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Escherichia coli (E. coli) in urine, qualitative screening test

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

This test checks for the presence of *Escherichia coli* bacteria in your urine, which can indicate a urinary tract infection (UTI).

Quick summary

["A positive result may signal a UTI needing treatment."]

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

Key facts at a glance

LOINC
92982-8
Short code
E coli DNA Spt NAA+non-prb-NCncRng
Synonyms
E coli DNA Spt NAA+non-prb-NCncRng
Category
chemistry
Sample
sputum
Container
Sterile sputum container
Units
N/A
Ref low
0.8
Ref high
1.2
Critical range
— – 5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-probe-amp-tar
CPT
85610
SNOMED
396252006
Specimen volume
3-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like frequent urination, pain or burning during urination, cloudy or strong-smelling urine, or fever. It helps confirm whether a UTI is present and guides treatment decisions.

What to Expect Before the Test

No special preparation is needed. You may urinate into a clean container before your urine sample is collected for testing.

How the Test Works

A small sample of your urine is tested using a qualitative method to detect *E. coli* bacteria. The result is either positive (bacteria present) or negative (no bacteria detected).

Possible Results and Their Meanings

A **positive result** means *E. coli* was found in your urine, strongly suggesting a UTI. A **negative result** means no *E. coli* was detected, but other causes of symptoms could still exist.

Reference range

INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A

Specimen: sputum

Inform your healthcare provider if you are taking blood thinners. No special preparation required.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: When This Test Matters

Short name

E. coli in urine (qualitative)

Frequently asked questions

If you have urinary symptoms, a positive test helps confirm a UTI and directs treatment (e.g., antibiotics). A negative result may prompt further testing if symptoms persist.
This test is not used to diagnose other infections (e.g., kidney infections) or conditions like kidney stones unless combined with other tests.
How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on lab processing times.
Can I take antibiotics before the test?
Yes, but inform your provider immediately—antibiotics may affect the test result and treatment planning.
  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