widal, test Antonyms

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Meaning of widal, test

The Widal test is a diagnostic tool used to detect antibodies against Salmonella typhi, the bacteria that causes typhoid fever.
The Widal test is based on the agglutination reaction, where antibodies in the patient's serum react with antigens from the Salmonella bacteria.
A positive Widal test indicates the presence of antibodies against Salmonella typhi, but it does not differentiate between acute and past infections.
The Widal test is often used as a screening test for typhoid fever in areas where the disease is endemic.
However, the Widal test has limitations, including low sensitivity and specificity, especially in vaccinated individuals.
A negative Widal test does not rule out typhoid fever, as it may take several days after infection for antibodies to develop.
The Widal test is not recommended as a definitive diagnostic test for typhoid fever and should be used in conjunction with other diagnostic methods.
The Widal test is performed by mixing a sample of the patient's serum with a suspension of Salmonella bacteria.
If antibodies are present in the serum, they will bind to the bacteria and cause them to clump together, resulting in a positive test.
A high titer on the Widal test usually indicates current or recent infection, but it is important to interpret the results in the context of clinical findings and other laboratory tests.

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No antonyms found.

The Widal test is a diagnostic tool used to detect antibodies against Salmonella typhi, the bacteria that causes typhoid fever.

The Widal test is based on the agglutination reaction, where antibodies in the patient's serum react with antigens from the Salmonella bacteria.

A positive Widal test indicates the presence of antibodies against Salmonella typhi, but it does not differentiate between acute and past infections.

The Widal test is often used as a screening test for typhoid fever in areas where the disease is endemic.