Routine blood results of Mycoplasma pneumoniae infection

Routine blood count for Mycoplasma pneumoniae infection may show normal or slightly elevated total white blood cell count, elevated lymphocyte ratio, and normal or slightly rapid erythrocyte sedimentation rate. However, these results are not specific, as similar changes in routine blood count may occur in many other conditions.

Normal or slightly elevated total white blood cell count: Mycoplasma pneumoniae infection usually does not cause significant leukocytosis, which is usually within the normal range or slightly elevated.

Increased proportion of lymphocytes: In Mycoplasma pneumoniae infection, the proportion of lymphocytes may be elevated because lymphocytes are important cells involved in the immune response, and they increase in response to infection to fight pathogens.

Normal or slightly rapid ESR: ESR is an indicator of the body's inflammatory response, and Mycoplasma pneumoniae infection may cause an inflammatory response in the body, so ESR may be normal or slightly faster.

Although routine blood tests can provide some clues, the diagnosis of Mycoplasma pneumoniae infection depends on other, more specific tests, such as sputum or throat swab for Mycoplasma pneumoniae protein antigen or PCR test for Mycoplasma pneumoniae nucleic acid. Imaging tests, such as chest x-ray and chest CT, can also show different imaging changes in lung lesions to inform the diagnosis.