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What Does This Widal Test Report Indicate?
Question: I have done WIDAL Test asper the report
Salmonella typhii "O" : 1:40
Salmonella typhii "H" : 1:40
Salmonella Paratyphii A (H) : Neg
Salmonella Paratyphii B (H) : Neg
Dengue Antibody IgG: Positive
Dengue Antibody IgM:Negative
What does this report mean
Salmonella typhii "O" : 1:40
Salmonella typhii "H" : 1:40
Salmonella Paratyphii A (H) : Neg
Salmonella Paratyphii B (H) : Neg
Dengue Antibody IgG: Positive
Dengue Antibody IgM:Negative
What does this report mean
Brief Answer:
Both tests are negative for respective diseases.
Detailed Answer:
Hello,
I understand your concern.
These results do not show that you have typhoid.
The Widal test is 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.
A single Widal test is of little clinical relevance due to the number of cross-reacting infections. Repeat test in case of persistent symptoms. Only a change I titer from 1/40 to 1/160 is significant in diagnosing Typhoid.
Regarding dengue antibodies, positive IgG represents an old/remote infection
In the absence of symptoms, this test is insignificant.
Post your further queries if any.
Thank you.
Both tests are negative for respective diseases.
Detailed Answer:
Hello,
I understand your concern.
These results do not show that you have typhoid.
The Widal test is 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.
A single Widal test is of little clinical relevance due to the number of cross-reacting infections. Repeat test in case of persistent symptoms. Only a change I titer from 1/40 to 1/160 is significant in diagnosing Typhoid.
Regarding dengue antibodies, positive IgG represents an old/remote infection
In the absence of symptoms, this test is insignificant.
Post your further queries if any.
Thank you.
Above answer was peer-reviewed by :
Dr. Vinay Bhardwaj
Answered by
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