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Dr. Andrew Rynne

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What Does This Blood Test Results Indicate?

I did a blood test for checking typhoid, the result is as follows

salmonella typhi O antigen : Positive 1:160

Salmonella Typhi H antigen: Positive 1;160

Paratyphi AH antigen: Negative 1;20

Paratyphi BH antigen: Negative 1:20



Please help to understand this report
Fri, 6 Jun 2014
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Pathologist and Microbiologist,  's  Response
Hello and welcome to HCM,
Widal test is an antigen antibody test done to detect antibodies against Salmonella typhi and paratyphi bacterial antigen.
The test is done againft O and H antigens.
The test is reported as antibody titres.
Titre of 1:80 and above is suggestive of infection.
The antibody titres for Salmonella typhi O and H both are raised and titres against Salmonella paratyphi are low.
Thus, Salmonella typhi infection is present and typhoid is confirmed.
Consult your primary health provider for prescription of drugs against typhoid infection.

Thanks and take care
Dr Shailja P Wahal


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What Does This Blood Test Results Indicate?

Hello and welcome to HCM, Widal test is an antigen antibody test done to detect antibodies against Salmonella typhi and paratyphi bacterial antigen. The test is done againft O and H antigens. The test is reported as antibody titres. Titre of 1:80 and above is suggestive of infection. The antibody titres for Salmonella typhi O and H both are raised and titres against Salmonella paratyphi are low. Thus, Salmonella typhi infection is present and typhoid is confirmed. Consult your primary health provider for prescription of drugs against typhoid infection. Thanks and take care Dr Shailja P Wahal