What is Mycoplasma positive in the lungs

Mycoplasma pneumoniae positive refers to the infection of mycoplasma caused by mycoplasma after mycoplasma enters the body, resulting in a type of disease with mycoplasma antibody concentrations higher than the normal range of the human body as the main clinical manifestation.Antibodies to Mycoplasma pneumoniae are divided into two types according to the length of time, namely IgM and IgG. IgM means that the patient has had mycoplasma infection within 3 weeks; IgG represents a patient with mycoplasma infection for more than three weeks, and the clinical reference value of Mycoplasma pneumoniae positivity should be comprehensively evaluated in combination with clinical symptoms. Methods for the detection of Mycoplasma pneumoniae include cold agglutinin detection, serum Mycoplasma pneumoniae antibody detection, and PCR detection of Mycoplasma pneumoniae gene DNA or culture of Mycoplasma pneumoniae. Cold agglutinin assays are rarely used due to their low specificity and sensitivity. Due to the difficulty and time-consuming nature of culture, the culture method is rarely used in clinical practice. PCR methods have high specificity and sensitivity in diagnosis, and what we usually call positive for Mycoplasma pneumoniae generally refers to a positive antibody test. Mycoplasma pneumoniae antibody titers begin to rise 7 to 9 days after infection and peak at 3 to 4 weeks, and positive antibody titers are best achieved by comparing acute and convalescent serum, and it is recommended to monitor antibody levels.