Skip to content

Enterococcus Group Antigen Detection (Serum/Plasma)

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

This test checks for the presence of antibodies related to *Enterococcus* bacteria, a group of bacteria commonly found in the gut and sometimes causing infections.

Quick summary

["Helps identify immune response to *Enterococcus* bacteria, which may indicate past exposure or infection."]

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

Key facts at a glance

LOINC
27077-7
Short code
Enterococ IgM Ser-aCnc
Synonyms
Enterococ IgM Ser-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What This Test Measures

The test detects specific antibodies (immunoglobulins) produced by your immune system in response to *Enterococcus* bacteria. These antibodies are part of your body’s defense mechanism against infection.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms suggestive of *Enterococcus* infection (e.g., fever, abdominal pain, or urinary tract issues) or if you’ve been exposed to the bacteria.

Common Uses in Healthcare

This test is often used to confirm or monitor immune responses in patients with recurrent infections, immune disorders, or those undergoing treatments that weaken the immune system.

What to Expect Before the Test

No special preparation is needed. A blood sample is typically drawn from a vein in your arm. If you’re on blood-thinning medication, let your provider know before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Enterococcus Antibody Screen

Frequently asked questions

A positive result suggests your body has detected *Enterococcus* bacteria, possibly indicating past infection or exposure. However, it does not confirm an active infection—additional testing may be needed.
This test is not a direct diagnostic for *Enterococcus* infection but can help assess immune response or guide further evaluation if symptoms persist.
What does a positive result mean?
A positive result means your immune system has likely encountered *Enterococcus* bacteria before, but it does not indicate whether you currently have an infection. Further testing (e.g., culture) may be required to diagnose active infection.
Can this test be used to diagnose a recent infection?
No, this test cannot diagnose an active *Enterococcus* infection. It is primarily used to evaluate immune response or monitor conditions where past exposure is suspected.
  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