Typhoid in first week of illness is best diagnosed by:-: (A) Serum widal test, (B) Stool culture, (C) Urine test, (D) Blood culture
Answer is D. Laboratory diagnosis of typhoid : 'BASU' mnemonic Test of diagnosis Time of diagnosis Remarks Blood culture 1st week Mainstay of diagnosis Antibodies (widal test) 2nd week Moderate sensitivity & specificity Stool culture 3rd week Useful for carries Urine test 4th week Useful for carries