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Blood Test Confirming Typhoid Fever

Learn which blood test confirms typhoid fever, including details on the Widal test, Typhi IgM/IgG, and blood culture for accurate diagnosis.

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Written by Dr. M L Ezhilarasan

Reviewed by Dr. Vasanthasree Nair MBBS

Last updated on 27th Jul, 2025

Typhoid fever is a serious bacterial infection caused by Salmonella typhi. It spreads through contaminated food and water and can lead to high fever, stomach pain, and weakness if left untreated. A blood test is one of the most reliable ways to confirm typhoid fever. If you or a loved one is experiencing symptoms, getting tested early can help in starting the right treatment quickly.

What is Typhoid Fever?

Typhoid fever is an infection caused by the Salmonella typhi bacteria. It spreads through contaminated food or water, especially in areas with poor sanitation. Once inside the body, the bacteria multiply in the intestines and bloodstream, leading to symptoms like high fever, headache, and digestive issues.

Without proper treatment, typhoid can cause severe complications, including intestinal bleeding or perforation. Early diagnosis through a blood test is crucial for effective treatment.

Common Symptoms of Typhoid Fever

Typhoid symptoms usually appear 1-3 weeks after exposure and may include:

  • High fever (often rising gradually)

  • Headache and body aches

  • Weakness and fatigue

  • Stomach pain and loss of appetite

  • Diarrhoea or constipation

  • Rose-colored spots on the chest or abdomen (in some cases)

If you notice these symptoms, especially after consuming contaminated food or water, consult a doctor and get tested.

Get Your Symptoms Checked By Top Specialists

Dr. M L Ezhilarasan, General Practitioner

Dr. M L Ezhilarasan

General Practitioner

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Visakhapatnam

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Dr. Suraja Nutulapati, General Physician/ Internal Medicine Specialist

Dr. Suraja Nutulapati

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Hyderabad

Apollo 24|7 Clinic, Hyderabad

recommendation

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Dr. D Bhanu Prakash, General Practitioner

Dr. D Bhanu Prakash

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Apollo 24|7 Clinic, Hyderabad

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How a Blood Test Confirms Typhoid Fever?

A blood test is one of the most accurate ways to diagnose typhoid fever. Here’s how it works:

1. Widal Test

  • Checks for antibodies against Salmonella typhi.

  • A positive result (high antibody levels) suggests infection.

  • Sometimes, a second test is needed after a few days to confirm.

2. Blood Culture Test

  • A small blood sample is taken and tested for bacteria growth.

  • Considered the gold standard for typhoid diagnosis.

  • Results take 2-3 days but are highly reliable.

3. Typhidot Test

  • A rapid test that detects IgM and IgG antibodies.

  • Provides results within a few hours.

Your doctor will recommend the best test based on your symptoms and medical history.

Treatment and Recovery

If diagnosed early, typhoid fever can be treated effectively with:

  • Antibiotics: The primary treatment to kill the bacteria.

  • Hydration & Nutrition: Drinking plenty of fluids and eating easily digestible foods helps recovery.

  • Rest: Essential for regaining strength.

Important: Always complete the full course of antibiotics, even if you feel better, to prevent relapse.

Prevention Tips

Typhoid can be prevented with simple precautions:

  • Drink clean, boiled, or filtered water.

  • Wash hands thoroughly before eating.

  • Avoid raw or undercooked food, especially street food.

  • Get vaccinated if travelling to high-risk areas.

When to See a Doctor?

If you or someone you know has:

  • Persistent high fever

  • Severe stomach pain

  • Prolonged weakness or dehydration

Don’t delay—consult a doctor immediately. Early testing and treatment can prevent complications.

Conclusion

Typhoid fever is a serious but treatable condition. Recognising symptoms early and getting a blood test can help in quick recovery. By following hygiene practices and staying cautious with food and water, you can reduce the risk of infection. If you have any concerns, don’t hesitate to reach out to a healthcare provider.

Consult Top Specialists

Dr. M L Ezhilarasan, General Practitioner

Dr. M L Ezhilarasan

General Practitioner

6 Years • MBBS

Visakhapatnam

Apollo 24|7 Clinic - Andhra Pradesh, Visakhapatnam

550

49 Cashback

Dr. Suraja Nutulapati, General Physician/ Internal Medicine Specialist

Dr. Suraja Nutulapati

General Physician/ Internal Medicine Specialist

10 Years • MBBS, MD (Internal Medicine)

Hyderabad

Apollo 24|7 Clinic, Hyderabad

recommendation

90%

(850+ Patients)

660

Dr. D Bhanu Prakash, General Practitioner

Dr. D Bhanu Prakash

General Practitioner

10 Years • MBBS, AFIH, Advanced certificate in critical care medicine, Fellowship in critical care medicine

Hyderabad

Apollo 24|7 Clinic, Hyderabad

660

97 Cashback

Get Your Symptoms Checked By Top Specialists

Dr. Syed Ismail Ali, General Practitioner

Dr. Syed Ismail Ali

General Practitioner

7 Years • MBBS

Hyderabad

Apollo 24|7 Clinic, Hyderabad

499

49 Cashback

Dr. M L Ezhilarasan, General Practitioner

Dr. M L Ezhilarasan

General Practitioner

6 Years • MBBS

Visakhapatnam

Apollo 24|7 Clinic - Andhra Pradesh, Visakhapatnam

550

49 Cashback

Dr. Mohammed Kamran, General Practitioner

Dr. Mohammed Kamran

General Practitioner

5 Years • MBBS, FIDM

Nashik

Apollo 24|7 Clinic - Maharashtra, Nashik

499

49 Cashback

Dr. Suraja Nutulapati, General Physician/ Internal Medicine Specialist

Dr. Suraja Nutulapati

General Physician/ Internal Medicine Specialist

10 Years • MBBS, MD (Internal Medicine)

Hyderabad

Apollo 24|7 Clinic, Hyderabad

recommendation

90%

(850+ Patients)

660

Dr. D Bhanu Prakash, General Practitioner

Dr. D Bhanu Prakash

General Practitioner

10 Years • MBBS, AFIH, Advanced certificate in critical care medicine, Fellowship in critical care medicine

Hyderabad

Apollo 24|7 Clinic, Hyderabad

660

97 Cashback

Consult Top Specialists

Dr. Syed Ismail Ali, General Practitioner

Dr. Syed Ismail Ali

General Practitioner

7 Years • MBBS

Hyderabad

Apollo 24|7 Clinic, Hyderabad

499

49 Cashback

Dr. M L Ezhilarasan, General Practitioner

Dr. M L Ezhilarasan

General Practitioner

6 Years • MBBS

Visakhapatnam

Apollo 24|7 Clinic - Andhra Pradesh, Visakhapatnam

550

49 Cashback

Dr. Mohammed Kamran, General Practitioner

Dr. Mohammed Kamran

General Practitioner

5 Years • MBBS, FIDM

Nashik

Apollo 24|7 Clinic - Maharashtra, Nashik

499

49 Cashback

Dr. Suraja Nutulapati, General Physician/ Internal Medicine Specialist

Dr. Suraja Nutulapati

General Physician/ Internal Medicine Specialist

10 Years • MBBS, MD (Internal Medicine)

Hyderabad

Apollo 24|7 Clinic, Hyderabad

recommendation

90%

(850+ Patients)

660

Dr. D Bhanu Prakash, General Practitioner

Dr. D Bhanu Prakash

General Practitioner

10 Years • MBBS, AFIH, Advanced certificate in critical care medicine, Fellowship in critical care medicine

Hyderabad

Apollo 24|7 Clinic, Hyderabad

660

97 Cashback

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