The Widal test, developed in 1896 and named after its inventor, Georges-Fernand Widal, is an indirect agglutination test for enteric fever or undulant fever whereby bacteria causing typhoid fever are mixed with a serum containing specific antibodies obtained from an infected individual.

May 25, 2015 · Widal Test is an agglutination test which detects the presence of serum agglutinins (H and O) in patients serum with typhoid and paratyphoid fever. When facilities for culturing are not available, the Widal test is the reliable and can be of value in the diagnosis of typhoid fevers in endemic areas.

Jun 14, 2023 · A positive Widal test means antibodies against typhoid or paratyphoid fever are in your blood. It indicates a recent or current infection. The results are reported as titer value which indicates the presence of antibodies against Salmonella typhi or …

Feb 5, 2022 · What is Widal Test? Widal test is an agglutination test used for diagnosis of enteric fever (Typhoidal or Paratyphoidal fever) serologically in clinical/diagnostic laboratories. This tests measure agglutinating serum antibodies level produced against the O (somatic) and H (flagellar) antigen of Salmonella Typhi and Paratyphi A, B, and C.

Mar 7, 2022 · Widal test is a common agglutination test employed in the serological diagnosis of enteric fever. This test was developed by Georges Ferdinand Widal in 1896 and helps to detect presence of salmonella antibodies in a patient’s serum.

Dec 9, 2024 · Understand what a positive Widal test means, its normal range, and how it helps diagnose typhoid fever. Learn about the test procedure, interpretation, and its role in effective treatment and prevention.

Jan 9, 2024 · The Widal test procedure helps identify typhoid fever caused by Salmonella enterica serotype Typhi. Developed by Georges Fernand Isidore Widal in the late 19th century, provided insights into antibodies indicative of exposure to the typhoid-causing bacterium.

What is a Widal Test? The Widal test is a rapid diagnostic test used to identify the presence of infection with “ Salmonella typhi ” or “Salmonella paratyphi” bacteria.

Widal test is an agglutination test in which specific typhoid fever antibodies are detected by mixing the patient’s serum with killed bacterial suspension of Salmonella carrying specific O, H, AH and BH antigens and observed for clumping ie.

Widal test is an easy, cheap, easily accessible and non invasive test to perform. It is of great significance in laboratories where blood cultures facility is not available (the results must be interpreted cautiously, as negative results do not exclude typhoid fever).