Direct smear test

No bacteria were found in normal people's blood, urine, cerebrospinal fluid, pleural fluid, pericardial fluid, and peritoneal fluid. Smear tests include pharyngeal wall smears, nasal secretion smears, pus smears, skin-derived tissue fluid smears, chest cavity, pericardial cavity, abdominal and joint capsule fluid smears, sputum smears, urine sediment smears, and cerebrospinal fluid Smears, stool smears, and vaginal discharge smears. Direct smear examination can help detect and assist diagnosis.