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Genetic test for specific bacterial or viral DNA using a nucleic acid amplification probe (e.g., for *Escherichia coli*, *Staphylococcus aureus*, or other pathogens)

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

This test detects the presence of genetic material from certain bacteria or viruses in your sample. It helps identify infections that may require treatment.

Quick summary

["Quickly checks for infections by looking at DNA from harmful microbes."]

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

Key facts at a glance

LOINC
99032-5
Short code
Gp B Strep DNA Ur Ql NAA+probe
Synonyms
Gp B Strep DNA Ur Ql NAA+probe
Category
coagulation
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

How the Test Works

Your sample (likely urine or blood) is analyzed using a specialized probe that targets DNA sequences unique to specific pathogens. If the DNA is present, the test detects it through amplification techniques.

What to Expect Before the Test

No special preparation is needed unless instructed by your healthcare provider. You may be asked to provide a urine sample, blood sample, or other bodily fluid depending on the test type.

Possible Results and Next Steps

A positive result indicates the presence of the targeted pathogen’s DNA, suggesting an infection. A negative result means the pathogen’s DNA was not detected in the sample. Follow-up testing or treatment may be recommended based on your doctor’s guidance.

When This Test Might Be Used

Doctors may order this test to diagnose infections in urine (e.g., urinary tract infections), blood, or other samples. It can also be used for screening or confirming suspected infections caused by specific bacteria or viruses.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Pathogen DNA Probe Test

Frequently asked questions

Why might my doctor recommend this test?
Your doctor may suggest this test if you have symptoms of an infection (e.g., fever, pain, or unusual discharge) or if they suspect a specific pathogen based on your medical history or test results.
What does a positive result mean?
A positive result means the test detected DNA from the suspected pathogen, which may indicate an active infection. Your doctor will discuss the next steps, such as further testing or treatment options.
Can false results occur?
Yes, false results can happen due to sample contamination, previous treatment, or technical errors. Your doctor will interpret results in the context of your symptoms and other tests.
  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