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Enterococcus faecalis Detection by Probe-Based Molecular Assay (Qualitative, Stool Sample)

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

This test checks for the presence of *Enterococcus faecalis*, a type of bacteria that can sometimes cause infections in the digestive tract.

Quick summary

["It helps identify if harmful bacteria are present in your stool sample."]

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

Key facts at a glance

LOINC
85775-5
Short code
Enterococ DNA Bld Pos Ql NAA+n-prb
Synonyms
Enterococ DNA Bld Pos Ql NAA+n-prb
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-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

What This Test Measures

The test detects genetic material (probe-based molecular assay) from *Enterococcus faecalis*, a bacterium that may be linked to infections like urinary tract infections, wound infections, or bloodstream infections in some cases. This is not a test for all types of bacteria—it specifically targets this one strain.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like diarrhea, fever, or signs of infection, especially if you’ve recently had surgery, a catheter, or a break in your skin. It helps determine if this specific bacteria is contributing to your health concerns.

Sample Collection and Process

A stool sample is collected (often via a swab or container) and sent to the lab. The test uses a molecular method to detect the bacteria’s genetic material, which is then analyzed for confirmation.

What to Expect Before the Test

No special preparation is needed, but you may be asked to avoid certain foods or medications that could interfere with results. If you’re on antibiotics, let your provider know.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A positive result means *Enterococcus faecalis* was found in your stool. This may indicate an infection or colonization, prompting further evaluation by your doctor. A negative result suggests this bacteria is not present, but other causes of symptoms should still be investigated. Results guide treatment decisions, such as antibiotic use if needed.

Short name

Enterococcus stool test

Frequently asked questions

Will this test show all types of bacteria?
No, this test specifically looks for *Enterococcus faecalis*. Other bacteria or viruses would require different tests.
What if I have a positive result?
A positive result may lead to additional tests or treatments, such as antibiotics, depending on your symptoms and overall health. Your doctor will discuss next steps with you.
Can I eat or drink before this test?
No special diet is required, but avoid foods that could alter stool consistency (like high-fiber foods) if instructed by your provider.
  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