The following tests are required for students to be screened for tuberculosis: i. PPD test, which is a skin test given by PPD reagent on the inner wall of the arm under observation for 72 hours and costs about 100 yuan. ii. The cost of this test is about 100 dollars. Second, blood can be given to check the tuberculosis antibody test, if the tuberculosis antibody is positive, it does not rule out the possibility that the patient has been infected with tuberculosis. Chest X-ray, the price is about 70 yuan, if you suspect that the lungs have more obvious tuberculosis infection foci, you need to further chest CT examination, the price is about 378 yuan. If students with fever, cough and blood in sputum come for TB screening, they need to be given a sputum test for antacid bacilli, which costs around 50 RMB, or for difficult TB screening, a blood test for T-cell detection of TB infection can be done, which costs around 600 RMB. Thus student TB screening is inexpensive if it is just a chest X-ray, and with difficult cases, specific tests need to be considered in the context of the specific situation, and the cost can be significantly higher.