Which of the following tests is used to confirm the presence of typhoid fever?

Correct option is B

The correct answer is (b) Widal Test.
· The Widal test is a serological test used to diagnose typhoid fever. It detects the presence of specific antibodies (O and H agglutinins) against the causative agent, Salmonella typhi, in the patient's blood.
· This test measures the agglutination (clumping) of bacteria when mixed with a serum containing specific antibodies from a person suspected of having typhoid fever.
· The test is commonly used in areas where typhoid fever is endemic and provides a relatively quick and simple diagnostic method.
Information Booster:
· Smear Examination: Typically used to diagnose diseases like malaria or tuberculosis, where blood or sputum smears are examined under a microscope for the presence of pathogens.
· Vivax Test: Used to diagnose malaria caused by Plasmodium vivax, not typhoid fever.
· C Reactive Protein (CRP) Test: Measures the level of CRP in the blood, which rises in response to inflammation but is not specific for typhoid fever.