IgG Antibody to Mycoplasma pneumoniae (Serum/Plasma)

What Does This Test Measure?

IgG antibodies are part of your immune system’s response to infections. If you’ve been exposed to *Mycoplasma pneumoniae*, your body produces these antibodies over time. This test checks for their presence in your serum or plasma to determine if you’ve had an infection.

Why Might You Need This Test?

Doctors may order this test if you’ve had symptoms like cough, fever, or chest pain that suggest *Mycoplasma pneumoniae* infection, especially if other tests (like a chest X-ray or culture) are inconclusive. It can also help confirm a diagnosis in cases where symptoms are mild or atypical.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The sample is then tested in a lab using an immunoassay method to detect IgG antibodies specific to *Mycoplasma pneumoniae*. Results are typically available within a few days.

What Do the Results Mean?

A positive result indicates the presence of IgG antibodies, suggesting you’ve likely had an infection by *Mycoplasma pneumoniae* at some point. However, a single positive test doesn’t always confirm an active infection—other tests or clinical evaluation may be needed. A negative result means no detectable antibodies were found, which could mean you’ve never been exposed or the infection has cleared.