question_answer 20)

  The chemical test that is used for diagnosis of typhoid is (a) ELISA test                     (b) ESR test                         (c) PCR test                        (d) Widal test

Answer:

                  (d) Typhoid fever could be confirmed by Widal test, while ELISA (Enzyme Linked Immuno sorbent Easy) is a widely used as diagnostic test for AIDS, PCR test is used to identify the genome sequences of organisms. ESR (Erythrocyte Sedimentation Rate) test is a type of blood test.