Widal Test

Widal Test (Slide Agglutination) test helps to detect typhoid fever and paratyphoid fever – collectively known as enteric fever, caused by the consumption of food or water contaminated by Salmonella bacteria. The symptoms include high fever, malaise, headache, constipation or diarrhoea, rose-colored spots on the chest, and enlarged spleen & liver.

This test helps to detect antibodies in a blood sample against two antigens (O & H) of bacteria. It should only be performed after a week or two for accurate results.