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Widal Test For Typhoid

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When fever persists over a week accompanied by fatigue and abdominal discomfort, a common suspicion is typhoid fever. Known for its global prevalence, typhoid is a bacterial infection that spreads through contaminated food or water. A key diagnostic tool for typhoid is the Widal Test or the Typhoid Test.

Reasons for Undergoing the Widal Test For Typhoid

Typhoid fever is caused by Salmonella Typhi bacteria, which spreads through contaminated food and water. The infection presents symptoms like persistent high fever, fatigue, abdominal pain or discomfort. If you experience these symptoms for over a week, your healthcare provider may recommend a Widal Blood Test to confirm typhoid.

It’s critical to diagnose typhoid early because:

  • It helps initiate appropriate treatment promptly.
  • Accurate diagnosis can prevent complications like intestinal perforation and meningitis.
  • Early detection can limit the spread of this contagious disease.

List of Parameters Considered During the Widal Test For Typhoid

The Widal Test for typhoid considers the following parameters:

  • Antigen Types: Detection of O (somatic) and H (flagellar) antigens of Salmonella typhi and Salmonella paratyphi.
  • Antibody Levels: Measurement of antibodies (agglutinins) in the patient’s serum against these antigens.
  • Titer Values: Determining the concentration of antibodies by serial dilution, with higher titers indicating a greater likelihood of infection.
  • Seroconversion: Comparison of antibody titers in paired sera samples taken 10-14 days apart to observe a significant rise in titer, which is indicative of an active infection.

Home Collection for Widal Test For Typhoid near you

Metropolis Healthcare, a leading diagnostic lab chain in India, offers a convenient at-home blood sample collection service. Trained technicians visit your home, collect the required Widal Test blood samples in a Gel Vacutainer or Plain Sterile Vacutainer, and transport them under prescribed conditions to an advanced Metropolis diagnostic lab.

Widal Test Price in Different Cities

The Widal test price varies across different cities in India. It typically falls within the range of ₹ 200 and ₹ 1,000. For instance, the Typhoid test price at Metropolis Healthcare is ₹ 550.

Test Criteria

Who should take the Widal Test?

The Widal Test usually is recommended for individuals suffering from symptoms suggestive of typhoid fever. These symptoms may include low-grade fever that gradually increases in severity, fatigue, headache, abdominal pain, constipation or diarrhoea, and rashes.

Why take the Widal Test?

Typhoid fever can lead to severe complications if not diagnosed promptly. The Widal or Typhoid Test assists in detecting antibodies produced by your body against Salmonella Typhi bacteria – the causative agent of typhoid fever. The sooner a diagnosis is made, the sooner treatment can begin, reducing the risk of complications.

What are the benefits of taking the Widal Test?

The Widal Test provides several advantages:

  • It aids in early detection of typhoid fever.
  • The results guide medical professionals to offer suitable medication.
  • Since typhoid is contagious, early detection and treatment can help prevent its spread to others.
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Widal Test For Typhoid Price

Metropolis Healthcare is a leading diagnostics centre and pathology lab in India equipped with the latest state-of-the-art technologies that provides the Widal Test For Typhoid with a clear pricing structure.

The Widal Test For Typhoid Price in Mumbai is ₹ 550 .

We are committed to deliver accurate and quality results from the best labs in India with complete transparency regarding test cost and turnaround time. No matter where you are, we strive to offer patients high-quality service that is affordable and accessible.

Frequently Asked Questions

The Widal Test is a serological test that detects antibodies in your blood produced against Salmonella Typhi bacteria, indicating a possible typhoid infection.

The Widal Test price or Typhoid test price may vary based on your location and the diagnostic centre you choose. Generally, it ranges between Rs 200 and Rs 600 in India.

Yes, diagnostic services like Metropolis Healthcare provide at-home sample collection for the Widal Test. Trained phlebotomists collect blood samples from your home, ensuring convenience and safety.

In a Widal Test, 1:80 indicates the dilution ratio of serum to saline during testing. A titer of 1:80 or more for O antigen and 1:160 or more for H antigen typically suggests an active infection.

A positive Widal Test indicates a probable typhoid infection, requiring immediate medical attention. Your healthcare provider will prescribe an appropriate course of treatment based on your symptoms and overall health condition.

A negative result means that there are no detectable antibodies against Salmonella Typhi in your blood, suggesting no active typhoid infection. However, a negative result does not entirely rule out typhoid fever as the test could be false-negative in early-stage infection.

Yes, the Widal or Typhoid Test is usually conducted in a fasting state for accurate results.

A Widal Test involves drawing blood from a vein, typically from your arm. The collected sample is then sent to the laboratory where it's tested for antibodies against Salmonella Typhi.

The Widal Test can suggest an active or recent typhoid infection based on the type and levels of antibodies present. However, it may not differentiate between a current and past infection definitively as antibody levels could remain elevated for some time after recovery.

Yes, various factors can affect Widal Test results:

  • Vaccination against typhoid fever can lead to a false-positive result.
  • Infections with other bacteria may cause cross-reactivity leading to false positives.
  • The Widal test may yield false-negative results if performed too early in the disease course when antibody levels are still low.

Widal Test measures the levels of specific antibodies in your blood which are produced in response to Salmonella typhi, the bacteria responsible for causing typhoid fever.

This test is mainly done to diagnose a current or past infection with typhoid fever. Other reasons include:

  • Evaluating the effectiveness of treatment for typhoid fever
  • Monitoring the progression of the infection
  • Detecting outbreaks of typhoid fever in communities or institutions

Your doctor might recommend this test if you have:

  • Symptoms suggestive of typhoid fever, such as high fever, abdominal pain, headache, and loss of appetite
  • Travelled to areas where typhoid fever is common
  • Been in close contact with someone diagnosed with typhoid fever

The results of widal test are interpreted based on the levels of specific antibodies detected. Elevated levels may indicate a current or recent infection with Salmonella typhi. However, abnormal results do not confirm a diagnosis on their own and should be interpreted by your doctor along with your symptoms, medical history, and other diagnostic tests.

  • A small amount of blood will be drawn from a vein in your arm using a needle.
  • The blood sample will be sent to the laboratory for testing.
  • The test is quick and relatively painless, although you may feel a slight pinch or prick when the needle is inserted.
  • You may be asked to avoid eating or drinking anything, except water, for several hours before the test.
  • Inform your doctor about any medications you are taking as they may interfere with the test results.
  • Follow any other instructions provided by your doctor, such as stopping certain medications or dietary restrictions.
  • Blood culture: To directly identify and isolate the bacteria causing typhoid fever
  • Stool culture: To detect Salmonella typhi in fecal samples
  • PCR test: A molecular test used to detect the DNA of Salmonella typhi in blood samples

Typhoid Serology Test or Typhi-dot Test

Typhoid fever is a bacterial infection caused by Salmonella typhi. It is commonly transmitted through contaminated food and water. Symptoms include high fever, weakness, abdominal pain, and diarrhea. Prompt diagnosis and treatment are crucial to prevent complications and further spread of the infection.

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