Brucella Antibody IgM is a blood test that detects IgM antibodies produced by the immune system against Brucella bacteria, which cause brucellosis. IgM antibodies may appear during the early phase of infection and can provide supportive evidence of recent exposure. The test is needed when brucellosis is suspected based on symptoms or exposure history, particularly after contact with infected animals or consumption of unpasteurized dairy products.
A positive result indicates that detectable IgM antibodies against Brucella are present. It may support recent exposure or infection but should be interpreted with symptoms and other laboratory findings.
A negative result means detectable IgM antibodies were not found. However, it does not completely exclude brucellosis, particularly if testing is performed early in the illness.
Not by itself. Antibody testing can have limitations, including false-positive results. Diagnosis should consider clinical symptoms, exposure history, and other laboratory tests.
People can become infected through contact with infected animals or their tissues and fluids, inhalation of contaminated material, or consumption of unpasteurized milk and dairy products.
Antibody levels can persist for some time after infection or treatment. Therefore, a positive IgM result should not automatically be interpreted as evidence of ongoing infection.
No. Antibody levels may not yet be detectable during early infection. If clinical suspicion remains high, your healthcare provider may recommend repeat or additional testing.
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