Typhidot / Salmonella Typhi IgG Test
Typhidot / Salmonella Typhi IgG Test
The Typhidot / Salmonella Typhi IgG Test is a rapid serological test used to detect IgG antibodies against Salmonella typhi, the bacteria responsible for typhoid fever. The presence of IgG antibodies typically indicates past infection or chronic carrier status, suggesting that the person has been exposed to typhoid fever previously and has developed an immune response.
Typhoid fever is a serious bacterial infection transmitted through contaminated food and water. It can cause high fever, abdominal pain, weakness, diarrhea, and severe complications such as intestinal perforation and sepsis if left untreated. Early detection of IgG antibodies helps identify individuals who may have had previous infections or who may be carriers of the bacteria, potentially contributing to the spread of typhoid fever.
What is the Typhidot / Salmonella Typhi IgG Test Used For?
- Identifying past exposure to Salmonella typhi through IgG antibodies.
- Determining chronic carrier status, especially in individuals without active symptoms.
- Supporting diagnosis of typhoid fever when combined with clinical evaluation and other laboratory tests.
- Screening individuals in typhoid-endemic areas or those at risk of transmission.
Symptoms of Typhoid
Fever
Fatigue
Stomach pain
Headache
Diarrhoea
Cough
Loss of appetite
Spots all over the body (rose-shaped)
Preparation for the Test
No fasting required. A blood sample is collected from a vein and analyzed for IgG antibodies. Inform your doctor about any recent antibiotic use, as it may affect results.
Interpretation of Test Results
A positive result alone does not confirm an active infection and should be correlated with clinical symptoms, blood cultures, and Widal test for a definitive diagnosis.
IgG Positive- Suggests past exposure or a chronic carrier state.
IgG Negative- No detectable IgG antibodies; past infection is unlikely.
FAQs
How does the IgG test differ from the Typhidot IgM test?
The IgG test detects past exposure or chronic carrier status, while the IgM test identifies active or recent infection.
Can a positive IgG result confirm an active typhoid infection?
No, additional tests such as blood culture or Widal test are required for confirmation.
How long does it take to receive results?
Results are typically available within 2 to 4 hours, making it a rapid diagnostic tool.
Can previous typhoid vaccination cause a positive IgG result?
Yes, individuals who have received a typhoid vaccine may test positive for IgG antibodies.
What should I do if my test is positive?
If you are asymptomatic but positive for IgG, consult a doctor to evaluate the possibility of carrier status and discuss preventive measures.
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