Mycobacterium tuberculosis test

Tubercle bacilli examination is the most specific method for the diagnosis of tuberculosis, and tuberculosis is the main basis for the diagnosis of tuberculosis. Take a smear test or a bacterial culture method. Smear acid-fast staining microscopy is fast and simple. It is rare in China for atypical mycobacteria, so acid-fast bacilli are positive, and tuberculosis diagnosis can basically be established. In addition to sputum, specimens such as throat secretions, pleural fluid, ascites, urine, cerebrospinal fluid, gastric juice, pus, and feces can be used for testing. Basic Information Specialist classification: Infectious disease inspection and classification: pathogenic microorganism inspection Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: Normal, not infected with tuberculosis. Positive: Prompt to be infected with tuberculosis. Tips: It is best to take fresh mucus or purulent part of the stool for 3 ~ 5g for inspection. Normal value Negative: No acid-fast bacilli were found in the smear, and Mycobacterium tuberculosis was not detected in the culture. Clinical significance 1. If the test result is positive, it can be diagnosed as tuberculosis infection, which is common in various tuberculosis cases. 2, through the smear examination to the acid-fast bacilli can be initially diagnosed as tuberculosis, and should be done in Mycobacterium tuberculosis culture, identification with other mycobacteria, if the culture of Mycobacterium tuberculosis or PCR technology to detect TB-RNA positive can be diagnosed as tuberculosis . Positive results may be diseases: tuberculosis, bronchial tuberculosis, fistula, chest wall tuberculosis, wrist tuberculosis, tuberculous ulcer, cervical lymph node tuberculosis, pediatric kidney tuberculosis, fistula, tuberculous pelvic inflammatory disease Before inspection: 1. When taking sputum specimens, it is better to cough up in the morning. After gargle with clear water, cough up the deep sputum 3~5ml. If you have less sputum, you can also collect the specimen for 24 hours or use atomization. Wait for the method to take advantage of it. 2, for innocent patients, throat swabs can be used for pharyngeal secretions for examination; for children who do not cough, you can take all the stomach juice for early morning fasting. 3, pleural fluid, ascites, cerebrospinal fluid, pus should prevent the specimen from coagulation, immediately sent for inspection. 4, take the urine specimen should be taken for the first time in the morning, all urine, stand for 4 hours, leaving the sediment part about 20 ~ 30ml for inspection. 5, the stool is best to take fresh mucus or purulent part 3 ~ 5g for inspection. When inspecting: Do as directed by your doctor. Not suitable for the crowd: no. Inspection process Four methods: PCR, phage lysis, dot blot hybridization, PCR-spot hybridization. Not suitable for the crowd No taboos. Adverse reactions and risks There are no related complications and hazards.