What Does My Widal Test Report Indicate?

Posted on Sat, 6 Feb 2016

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sat, 6 Feb 2016 Answered on

Wed, 6 Apr 2016 Last reviewed on

Question : Widal Test Report
Salmonella Typhi O (TO) Non Reactive
Salmonella Typhi H (TH) Reactive UPto Titre 1:40
Salmonella Paratyphi A, H (AH) Non Reactive
Salmonella Paratyphi B, H (AH) Non Reactive

It is Typhoid Positive

Answered by Dr. Tushar Kanti Biswas (38 minutes later)

Brief Answer:
Your Widal Test report is not considered Positive for typhoid fever

Detailed Answer:
Hi,

Thank you for your query. I can understand your concerns.

Widal Test is not a reliable test for typhoid fever,because of false positivity.

However a four fold rising titre (e.g., from 1:40 to 1:160) in the course of the infection, is considered positive for typhoid fever.

The Widal test is also considered positive if TO antigen titer is more than 1:160 in an active infection, or if TH antigen titer is more than 1:160 in past infection or in immunized persons.

Your test report does not meet any of these figures.

Your Widal report hence is not considered positive for typhoid fever.

Regards

Dr. T.K. Biswas M.D. XXXXXXX

Above answer was peer-reviewed by : Dr. Arnab Banerjee