Typhoid (Enteric fever): Investigations
Typhoid can be confirmed by various investigations and each of them becomes positive at various times in the course of the disease. This can be remembered as, BASU.
- Blood culture in the 1st week (Bone marrow culture is better, but not commonly done)
- Antibody detection (Widal) in 2nd week
- Stool culture in the 3rd week
- Urine culture in the 4th week
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Did you know?
|Widal test shows a diagnostic titre for Salmonella Typhi after 7-10 days of disease. It's positivity is maximum in third week.|