The WIDAL Test (Tube Method) is a blood test used to help diagnose typhoid fever, an infection caused by the bacteria Salmonella typhi. The test works by detecting antibodies produced by the immune system in response to the bacteria.
During the test, the patient’s blood serum is mixed with specific antigens in test tubes. If antibodies against Salmonella typhi are present, a visible reaction occurs, which helps indicate a possible infection.
When a person shows symptoms such as persistent fever, headache, stomach pain, weakness, loss of appetite, or diarrhea. These symptoms may suggest typhoid fever or related infections.
The tube method is considered more reliable than rapid slide tests because it provides a more detailed measurement of antibody levels. The results help doctors evaluate the infection and decide the appropriate treatment.
Inform the technician or doctor about any medications you are taking.
Mention if you have recently taken antibiotics or treatment for fever.
Inform the doctor about ongoing symptoms such as persistent fever.
Tell the technician if you have had previous typhoid infection or vaccination.
Carry previous medical or lab reports, if available, for better evaluation.
