Positive IgG antibody to Mycoplasma pneumoniae indicates that you have been infected with Mycoplasma pneumoniae before, but the infection has disappeared, so you don’t need special treatment. After the human body is infected with Mycoplasma pneumoniae, it will produce specific IgG and IgM, and the IgM antibody appears earlier, usually one week after the infection, so when the symptoms of pneumonia appear, you can use this test to clarify whether there is a mycoplasma infection or not, and if it can be diagnosed as a mycoplasma infection, you need to use azithromycin and other medicines to control it. Mycoplasma pneumoniae antibody IgG appears relatively late, if significantly increased, indicating a recent infection, if significantly reduced, indicating the late stage of infection, general medicine can be tested by IgG and IgM at the same time, which can improve the diagnostic rate, can guide the use of medication to improve the effectiveness of treatment. If there are no clinical symptoms, you don’t need to worry too much, but if there are symptoms, it is recommended to actively treat.