Widal Test Report Normal Range

the normal range for Widal test reports

Widal Test Report Normal Range

The Widal test is a blood test that is used to detect antibodies to the Salmonella typhi and Salmonella paratyphi bacteria. These bacteria are responsible for causing typhoid fever and paratyphoid fever, respectively.

The normal range for the Widal test is a titer of less than 1160 for both the O and H antigens. A titer of 1160 or higher is considered to be positive and indicates that the person may have been infected with typhoid fever or paratyphoid fever.

However, it is important to note that a positive Widal test result does not always mean that the person is currently sick with typhoid fever or paratyphoid fever. It is possible that the person was infected with the bacteria in the past and has since recovered. A positive Widal test result can also be caused by vaccination against typhoid fever.

In order to make a definitive diagnosis of typhoid fever or paratyphoid fever, the Widal test results should be interpreted along with other clinical findings, such as fever, headache, cough, rash, and abdominal pain.

Here is a table of the normal ranges for the Widal test

| Antigen | Normal Range |
|—|—|
| O | < 1160 | | H | < 1160 | It is important to note that the normal range for the Widal test may vary slightly from laboratory to laboratory. If you have any questions about your Widal test results, be sure to talk to your doctor. Here are some additional things to keep in mind about the Widal test * The Widal test is not always accurate. It can miss up to 30% of cases of typhoid fever. * The Widal test can take up to 7 days to get results. * The Widal test is not recommended for children under the age of 5 years. If you are concerned that you may have typhoid fever or paratyphoid fever, see your doctor right away. They can order other tests, such as a blood culture, to confirm the diagnosis.

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