How long does it take for Mycoplasma pneumoniae to turn negative after a positive result?
The time for Mycoplasma pneumoniae to turn from positive to negative varies depending on individual differences and the severity of the condition. Under normal circumstances, it may take 2 to 4 weeks to become negative. It is recommended that patients seek timely medical treatment at a hospital. The analysis is as follows:

1. 2-3 weeks
For most patients, after testing positive for Mycoplasma pneumoniae and receiving effective treatment, the conversion to negative usually occurs within 2 weeks. Pediatric patients with mild cases of Mycoplasma pneumonia who receive timely and appropriate treatment may become negative around 2 weeks. The time required for adults to turn negative is generally slightly longer than in children; with proper treatment, adults usually become negative within approximately 3 weeks.
2. 3-4 weeks
However, if the condition is severe—for example, involving multiple lung lobe lesions, accompanied by other complications, or occurring in individuals with pre-existing immunodeficiency—the time required for the test to turn negative may be prolonged to 3-4 weeks.
If a positive result for Mycoplasma pneumoniae is confirmed, prompt medical attention should be sought to prevent worsening of the condition. Adequate rest and avoiding physical exhaustion during treatment can aid in recovery.