Brucella IgG Antibody, Serum
Overview
The Brucella IgG Antibody, Serum test is a blood test used to detect IgG antibodies against Brucella bacteria. Brucellosis is a bacterial infection that can spread from infected animals to humans through contaminated dairy products, undercooked meat, or direct contact with infected animals.
This test helps in identifying past exposure, chronic infection, or ongoing immune response to Brucella infection.
Why This Test is Done
Doctors may recommend the Brucella IgG Antibody test if a person has symptoms such as:
- Persistent fever
- Night sweats
- Joint or muscle pain
- Fatigue and weakness
- Headache
- Loss of appetite
- Back pain
- History of exposure to livestock or unpasteurized dairy products
It is also used to:
- Support the diagnosis of brucellosis
- Monitor chronic or previously treated infections
- Differentiate between recent and past infection when combined with IgM testing
Sample Required
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Sample Type: Blood (Serum)
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Preparation: Usually no fasting required
Understanding the Results
Normal Result
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Negative / Non-Reactive
- No detectable Brucella IgG antibodies
- Suggests no past exposure or infection
Abnormal Result
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Positive / Reactive
- Indicates previous exposure or possible chronic Brucella infection
- May persist for months or years after infection
Important Note
IgG antibodies generally appear later than IgM antibodies. For accurate diagnosis, doctors may recommend:
- Brucella IgM Antibody test
- Blood culture
- Clinical correlation with symptoms and exposure history
Who Should Consider This Test?
This test may be advised for:
- Veterinarians
- Dairy and farm workers
- Slaughterhouse workers
- People consuming unpasteurized milk products
- Individuals with prolonged unexplained fever
Benefits of the Test
- Helps detect chronic or past Brucella infection
- Assists in early diagnosis and treatment planning
- Useful in monitoring disease progression
- Supports evaluation of prolonged fever cases
Frequently Asked Questions
Is fasting required for this test?
No, fasting is generally not required.
Can this test confirm active brucellosis?
A positive IgG result suggests exposure or chronic infection, but additional tests may be needed to confirm active disease.
How is brucellosis transmitted?
Brucellosis can spread through:
- Unpasteurized dairy products
- Contact with infected animals
- Inhalation of contaminated particles
Is brucellosis treatable?
Yes, brucellosis is treatable with appropriate antibiotics when diagnosed early.
