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Enterococcal Antibiotic Resistance Detection by Probe-Based Assay (Qualitative)

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

This test checks for antibiotic resistance in *Enterococcus* bacteria, which are sometimes found in urine or blood. It helps determine if certain antibiotics will be effective against these bacteria.

Quick summary

["This test helps guide treatment choices for infections caused by *Enterococcus* bacteria."]

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

Key facts at a glance

LOINC
92784-8
Short code
Enterococ DNA Bld Pos Ql NAA+probe
Synonyms
Enterococ DNA Bld Pos Ql NAA+probe
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order this test if you have symptoms of a urinary tract infection (UTI), bloodstream infection, or other infections where *Enterococcus* bacteria are suspected. It’s also used in hospital settings to monitor antibiotic resistance in patients receiving treatment.

What to Expect Before the Test

No special preparation is needed. The test may involve a urine sample (if UTI is suspected) or a blood sample. If a urine sample is used, you may be asked to collect midstream clean-catch urine. If blood is drawn, it’s typically done in a clinic or hospital setting.

What the Test Results Mean

Results are qualitative (yes/no) and indicate whether the bacteria tested are resistant to specific antibiotics. A positive result means the bacteria may not respond to those antibiotics, and alternative treatments may be needed.

Common Uses and Limitations

This test is useful for identifying antibiotic resistance in *Enterococcus* but isn’t a complete picture of all possible infections. It’s often used alongside other tests or cultures to guide treatment decisions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Enterococcal Antibiotic Resistance Screen

Frequently asked questions

What does a positive result mean for my treatment?
A positive result suggests the bacteria may be resistant to certain antibiotics, so your doctor may adjust your treatment plan to use different medications. This helps prevent antibiotic resistance in your body and in the community.
Can this test be used for all types of infections?
No, this test is specific for *Enterococcus* bacteria. It’s most useful for urinary tract infections, bloodstream infections, or infections where *Enterococcus* is suspected. Other tests may be needed for different types of infections.
How soon will I get my results?
Results are typically available within 24 to 48 hours, depending on the lab and testing method. Your doctor will discuss the results with you during your follow-up visit.
  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