Widal test: Introduction, Principle, Procedure, Result interpretation, Applications and limitations Introduction Widal test is a serological test which is used for the diagnosis of enteric fever or typhoid fever. The test was developed by Greembaum and Widal in 1896. Typhoid or enteric fever is caused by a gram negative bacteria Salmonella enterica (Salmonella Typhi or Salmonella Paratyphi), found in the intestine of man. Salmonella paratyphi also causes Typhoid but of a milder form ... Discover the normal range for typhoid tests. Learn how abnormal results can indicate an infection and the importance of prompt medical attention. Widal Test Positive Report: When a Widal test report is positive, it shows elevated antibody titers, typically at or above 1:160. This suggests that the body is actively responding to the infection. A Widal test means your body has developed resistance against Salmonella bacteria. However, the positive result means past exposure to the disease, inherent antibodies, or false positives.
