The interpretation of the Widal test reports needs careful study. Widal blood test is both qualitative and quantitative diagnostic analysis. A Widal test report is more commonly known as the typhoid test report. If the Widal test range/typhoid normal range is more than or equal to 1:160 titre for antigen O and antigen H, then it indicates typhoid infection. For the diagnosis of a Widal blood test, 1:20, 1:40, 1:60, 1:80, 1:160, and 1:200 titres need to be included in the diagnosis to obtain the typhoid test report.