How to check out typhoid fever

Tests for typhoid fever include blood test, stool test, urine test, bone marrow test, Widal reaction, blood culture, stool culture, rose rash aspirate smear and culture, etc. The main tests for typhoid fever include the following: 1. Blood test: decrease in total white blood cells, disappearance of eosinophils, especially granulocytopenia. 2. Stool test: After the incubation period, the positive rate can reach more than 75% in the third-fourth week. The appearance is pasty or watery. There are few pus and mucus. There are a lot of pus cells under microscopic examination, but not many red and white cells. 3. Urine examination: mild proteinuria may be present, which may not be parallel to the severity of the disease. 4. Bone marrow examination: 5. Widal reaction: " O" antibody agglutination titer ≥ 1:80," H" antibody agglutination titer ≥ 1:160, recovery period titer increased more than 4 times diagnostic significance. 6. Other tests: The positive rate of blood culture can reach more than 50% in the first week of the course of disease, and then gradually decreases, and the positive rate is about 25% in the third to fourth week of the course of disease. It should be noted that the above examination methods need to be carried out under the guidance of a doctor. Specific examination items and interpretation of results should be carried out according to individual circumstances and doctor's recommendations. At the same time, for special groups, such as pregnant women, children, the elderly, etc., examination methods and precautions may vary. Before any tests are performed, you should inform your doctor of your medical history and allergies to ensure the safety and accuracy of the tests.