Typhoid is diagnosed by detecting the presence of S. typhi via blood, stool, urine, or bone marrow sample
A blood culture during the first week of the fever can show S. typhi bacteria.
Other tests that can help diagnose this condition include:
· ELISA urine test to look for the bacteria that cause Typhoid fever
· Fluorescent antibody study to look for substances that are specific to Typhoid bacteria
· Platelet count (platelet count may be low)
· Stool culture