The relationship between mycoplasma pneumonia and blood tests

The suspicion of mycoplasma pneumonia requires a blood draw, but the blood draw involves two aspects, one is the routine blood test, including C-reactive protein, which is done by all patients with fever and cough who are suspected of pneumonia.There is also a specific test that is done specifically for the suspicion of mycoplasma pneumonia, that is, the serological test, which is a separate category. First of all, the routine blood test test, the general fever patient, especially the fever cough, chest X-ray shadow, not excluding lung infection patients, must do the blood routine C-reactive protein test, other blood test tests, including serological methods to diagnose mycoplasma pneumonia from the perspective of antigen and antibody, including complement fixation test, indirect hemagglutination test, and newer enzyme-linked immunosorbent test. Some laboratory tests are retrospective, and the diagnosis is retrospectively made by comparing blood drawn during the acute phase with blood drawn after the recovery phase. The enzyme-linked immunosorbent assay, also known as the Elisa method kit, can detect antibodies to Mycoplasma pneumoniae-associated IgM and IgG at an early stage. In recent years, the detection of mycoplasma nucleic acid by nasopharyngeal swab can relatively quickly determine whether there is mycoplasma infection, and it is often necessary to judge whether there is mycoplasma pneumonia in combination with symptoms and chest imaging examination and a variety of laboratory tests.