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Typhidot Test Cost & Labs

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Thypidot Test Price – IGG / IGM₹ 260
Typhidot Test Price – IGG₹ 175
Typhidot Test Price – IGM₹ 175
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Typhidot Test Price.

Frequently Asked Questions About Typhidot Test

What is Typhidot?

Broadly speaking, typhidot can confirm whether you have typhoid or not while widal test can only indicate or preliminarily say that you may have typhoid. Typhidot is a qualitative test which gives a yes or no answer whereas widal gives quantitative value.

What is Typhoid?

“Typhoid” is an acute disease associated with high fever and is one of the most pressing public health problems in India. India is one of the countries where this is endemic and India is known as a high-risk area for Typhoid infection.

The Typhoid infection is caused by bacteria called “Salmonella Typhi” and it is often associated with fever. A related bacteria called” Salmonella paratyphi” also causes a less severe illness. The typhoid bacteria lives in the intestines for 1-3 weeks and then travels to the blood streams and thereon spreads to the other tissues and organs of a human body. Some people may carry the bacteria without developing any typhoid symptoms and they are known as asymptomatic carriers.

What are the causes of Typhoid?

Typhoid is mainly transmitted by food or water, in much the same way as cholera. People, who are infected with the bacteria Salmonella typhimurium, excrete live bacteria in their urine and feces. These bacteria are usually contagious for a few days before any symptoms develop in our body, so people don’t know if they need to take extra precautions. If we don’t wash our hands properly, the typhoid bacillus can be transferred to water or food and from there to another person. Also, it can be spread directly from person to person via contaminated fingers.

About 4% of people who are infected (treated or not) become asymptomatic (without any symptoms) carriers of Salmonella typhi. This means that such people continue to shed bacteria in their feces for at least a year and often for life but don’t have any symptoms of typhoid.

Symptoms of Typhoid:

The symptom of Typhoid usually starts within the first two weeks after exposure to the disease. If the condition is identified on time and treated immediately, the symptoms of Typhoid may begin to ease within three to six days of beginning a course of antibiotics. Typhoid fever can rapidly worsen over a period of days and become life threatening if left untreated.

Some of the common symptoms of typhoid include:

  • Typhoid is notorious for causing a fever that can reach temperatures as high as 39-40°C (103-104°F).
  • Sweating
  • Headache, fatigue and muscle pain
  • Abdominal pain and bloating
  • Nausea and vomiting
  • Loss of appetite
  • Diarrhea or constipation. While adults may get constipated and children are more likely to get diarrhea.
  • Small pink rash across the body, especially the abdominal area
  • High fever may lead to delirium and confusion

A serious condition of intestine bleeding may also arise in the third week, the brain may also get affected leading to a condition known as encephalitis, and there may be a case of inflammation of gall bladder too.

Surgery is required only if the bowels are perforated. This is the worst condition of typhoid.

Typhoid settles down in the third and fourth week, but relapses may occur in patients and 3 to 5% of people become carriers of this bacteria even after the treatment. 

What is the difference between Typhidot and Widal Test?

Typhidot Test:

Typhidot test is a quick and comparatively uncomplicated laboratory test for Typhoid Disease. It requires a small blood sample from the patient suffering from suspected fever.

The purpose of this test is to detect the antibodies that are produced in the body to fight typhoid fever. Antibodies are our body’s defence mechanism. Antibodies to fight any disease are specific to that disease. So if we detect typhoid antibodies in our body, it confirms typhoid fever. 

Typhidot Test principle

  1. This test detects antibody IgG and IgM in blood of the patient.
  2. The test should be done at least 3 days after fever starts. This ensures that the antibodies that are to be detected in the test are already produced in our body.
  3. The Typhidot is easy to perform, and requires no special equipment.

Interpretation of Result

Presence of IgM antibodies represent a recent typhoid infection while presence of IgM antibodies says that you had typhoid infection in the past.

  1. IgM line positive = Acute typhoid fever.
  2. IgM +IgG positive = Acute typhoid fever.
  3. IgM negative and IgG positive = Past infection.

Widal Test

Widal is a simple blood sample based test. It can be done with two methods – slide agglutination or tube agglutination.


  • Positive Test: If there is Agglutination within a minute.
  • Negative Test: No agglutination occurs.

The Widal test is positive if TO antigen titre is more than 1:160 in an active infection, or if TH antigen titre is more than 1:160 in past infection or in immunized persons. A single Widal test is of little clinical relevance due to the number of cross reacting infections, including malaria. If no other tests (either bacteriologic culture or more specific serology) are available, a fourfold increase in the titre (e.g., from 1:40 to 1:160) in the course of the infection, or a conversion from an IgM reaction to an IgG reaction of at least the same titre, would be consistent with a typhoid infection.

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Typhidot Test
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