Widal

About This Package

The **Widal test** is a diagnostic blood test used to detect typhoid fever and other enteric infections caused by Salmonella bacteria, particularly **Salmonella typhi** and **Salmonella paratyphi**. **Key Points:** - **Purpose:** The Widal test measures the presence of specific antibodies (O and H antigens) in the blood against Salmonella bacteria. Elevated levels of these antibodies can indicate an active infection with Salmonella. - **O Antigen:** This antibody is directed against the somatic (cell wall) antigens of the bacteria. - **H Antigen:** This antibody is directed against the flagellar (motility) antigens of the bacteria. - **Clinical Use:** The test is used to diagnose typhoid fever and paratyphoid fever, and to monitor the progression of these infections. It is typically used in conjunction with clinical symptoms and other diagnostic tests for accurate diagnosis. **Limitations:** The Widal test can sometimes give false-positive or false-negative results due to cross-reactivity with other infections or past immunization. Therefore, it should be interpreted alongside clinical findings and other diagnostic methods.

Included Tests & Parameters