WIDAL TUBE METHOD TEST (NDC)

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The Widal Tube Method Test (NDC) is a laboratory blood test used to help diagnose typhoid and paratyphoid fever caused by Salmonella typhi and Salmonella paratyphi. Unlike the slide method, the tube method quantitatively measures antibody levels (titres) against the O (TO) and H (TH) antigens of Salmonella typhi and the AH and BH antigens of Salmonella paratyphi. It is considered more accurate for determining the concentration of antibodies and assessing the stage of infection.

This test is commonly recommended for individuals with prolonged fever, headache, abdominal pain, weakness, loss of appetite, or other symptoms suggestive of enteric fever. The Widal Tube Method Test helps doctors confirm a recent or ongoing Salmonella infection, monitor antibody titres, and support diagnosis when interpreted along with clinical findings, patient history, and other laboratory investigations.

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Widal Tube Method Test (NDC) Test -

What is the Widal Tube Method Test (NDC)?

The Widal Tube Method Test is a blood test that measures antibody titres against Salmonella typhi and Salmonella paratyphi to help diagnose typhoid and paratyphoid fever.

Why is the Widal Tube Method Test performed?

It is performed to help diagnose enteric fever, evaluate the body’s immune response to Salmonella infection, and support clinical decision-making.

Do I need to fast before the Widal Tube Method Test?

No. Fasting is generally not required before the test unless your doctor advises otherwise.

How is the Widal Tube Method Test performed?

A blood sample is collected and tested in the laboratory using the tube agglutination method to measure antibody titres against Salmonella antigens.

Can the Widal Tube Method Test alone confirm typhoid fever?

No. The test should be interpreted along with your symptoms, medical history, and other laboratory investigations, such as blood culture, for an accurate diagnosis.

What is the advantage of the Widal Tube Method over the Slide Method?

The Tube Method provides quantitative antibody titres and is generally considered more reliable for assessing the level of antibodies and supporting the diagnosis of typhoid fever.

Introduction:

A blood test used to help diagnose typhoid and paratyphoid fever.
Measures antibody titres against Salmonella typhi and Salmonella paratyphi.
Performed using the tube agglutination method.
Provides quantitative results for improved diagnostic accuracy.
Supports the evaluation of enteric fever.

Purpose of the Test:

Help diagnose typhoid and paratyphoid fever.
Measure antibody titres against Salmonella bacteria.
Assess the body's immune response to infection.
Support confirmation of enteric fever.
Assist doctors in treatment planning.

Symptoms:

Importance:

Provides more accurate and quantitative results than the slide method.
Helps detect recent or ongoing Salmonella infection.
Supports timely diagnosis and treatment.
Assists in monitoring antibody levels.
Improves clinical decision-making when combined with other laboratory tests.

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