MediLytic Widal 'O' & 'H' 20 ml

MediLytic Widal ‘O’ & ‘H’ 20 ml refers to a diagnostic reagent kit used for performing the Widal test, a serological test for detecting antibodies against Salmonella typhi and S. paratyphi (causative agents of typhoid fever).

• ‘O’ antigen → Somatic antigen (detects early infection)

• ‘H’ antigen → Flagellar antigen 

A standard 20 ml Widal reagent set usually contains:

The test is performed using tube agglutination or slide agglutination to detect the presence and titer of anti-typhoid antibodies in serum.

🧪 Interpretation (General Guidance)

• A rising titer or high titer against O antigen → Suggests acute typhoid

• High H antibody titer → Indicates past exposure or vaccination, or ongoing infection

• Interpretation must consider baseline titers of the local population