epending on the purpose, the typhoid fever can be diagnosed in the laboratory by either of the following method, i) Widal, ii. Blood culture and iii. Nucleic acid based identification method.

Complete Textbook Of Phlebotomy
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Chapter7: The Challenge Ofphlebotomy
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Depending on the purpose, the typhoid fever can be diagnosed in the laboratory by either of the following method, i) Widal, ii. Blood culture and iii. Nucleic acid based identification method. Write a brief essay comparing these three diagnostic tests. Your answer must contain the basis of identification of each test, what does it mean by positive and negative results and which test do you think to be useful for the identification of active patient and which test is/are useful for the screening of previously infected case. Which test is prerequisite to perform the antibiotic susceptibility pattern?

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