Antibody titers for Mycoplasma pneumoniae

Mycoplasma pneumoniae is a common pathogen of respiratory tract infections, especially in children, and it can cause a variety of respiratory diseases, such as mycoplasma pneumonia, pharyngitis, tracheitis, bronchitis and so on.

The determination of its antibody titration mainly has clinical significance, because if its titer is greater than 1% and 60 is positive, it indicates recent infection of Mycoplasma pneumoniae, and after Mycoplasma pneumoniae infection, the host and the immune system interact with each other, which can produce a wide range of abnormal immune responses, and can stimulate our B cells to produce heterosexual IgG and IgM antibodies.

IgG appears relatively early, usually about a week after infection, and peaks in three to four weeks.

Because the incubation period for Mycoplasma pneumoniae is generally two to three weeks, the level of IgG antibodies is very high by the time the patient presents with symptoms, although a positive IgG antibody can be used as a diagnostic criterion for acute infection.

If the IgM antibody is negative, it does not mean that the patient is not infected with Mycoplasma pneumoniae, and IgG antibody measurement is also required, and the IgG antibody appears a little later than the IgM antibody, such as a significant increase, indicating a recent infection, a significant decrease, indicating that the patient is in the late stage of infection, and we need to go to the hospital for treatment in time.