This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
For tuberculosis screening which test is done - 
Select and explain. 
A. Sputum microscopy, B. Sputum culture, C. Tuberculin test, D. Lymph node biopsy
C: Tuberculin test
Answer: C: Tuberculin test 
Explanation: Ans. is 'c' i.e., Tuberculin test "Tuberculin test is done with purified protein derivation (PPD)and impoant screening test for TB".Teste for tuberculosis screening are :-Tuberculin test (Mantoux test).Interferon-gamma release assay (e.g. Quantiferon TB assay).