Checking Blood Tests for Typhoid
Explore the key blood tests for typhoid diagnosis, including Widal test, Typhi IgM, and blood culture, to ensure accurate detection and treatment.
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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. One of the most reliable ways to diagnose typhoid is through blood tests. If you or a loved one is experiencing symptoms, getting tested early can help in timely treatment and recovery.
What is Typhoid Fever?
Typhoid fever is an infection caused by the Salmonella typhi bacteria. It spreads when people consume food or water contaminated with the bacteria. Poor sanitation and hygiene increase the risk of infection. Once inside the body, the bacteria multiply in the intestines and bloodstream, leading to symptoms like:
High fever (often rising gradually)
Headache and body aches
Stomach pain and loss of appetite
Weakness and fatigue
Diarrhoea or constipation
Rose-colored spots on the skin (in some cases)
If not treated, typhoid can lead to severe complications like intestinal bleeding or perforation. Early diagnosis through blood tests is crucial.
Why Are Blood Tests Important for Typhoid?
Blood tests help confirm the presence of Salmonella typhi bacteria in the body. Since symptoms of typhoid can resemble other illnesses (like malaria or dengue), blood tests provide a clear diagnosis. Detecting typhoid early allows doctors to prescribe the right antibiotics and prevent complications.
To Know More Consult Top Specialists
Types of Blood Tests for Typhoid
Doctors may recommend one or more of the following tests:
1. Widal Test
What it checks: Looks for antibodies against Salmonella bacteria.
When to take it: Usually after 7-10 days of fever.
Limitations: Can sometimes give false positives if you’ve had a previous infection or vaccination.
2. Typhidot (IgM/IgG) Test
What it checks: Detects specific antibodies (IgM and IgG) to confirm recent or past infection.
When to take it: Effective within 2-3 days of fever.
Advantage: Faster and more accurate than the Widal test.
3. Blood Culture Test
What it checks: Identifies live Salmonella bacteria in the blood.
When to take it: Best in the first week of fever.
Advantage: Most reliable test for early diagnosis.
4. PCR Test (Polymerase Chain Reaction)
What it checks: Detects bacterial DNA in the blood.
When to take it: Useful in early and late stages.
Advantage: Highly accurate but may not be available everywhere.
How to Prepare for a Typhoid Blood Test?
No fasting is usually required.
Inform your doctor about any medications you’re taking.
A small blood sample will be taken from your arm.
What Do the Test Results Mean?
Positive Result: Confirms typhoid infection; antibiotics will be prescribed.
Negative Result: If symptoms persist, your doctor may recommend repeat testing.
Managing Typhoid Fever
If diagnosed with typhoid, follow these steps:
Take prescribed antibiotics (complete the full course).
Stay hydrated (drink clean water, ORS, or coconut water).
Eat light, nutritious meals (boiled foods, bananas, yoghurt).
Rest well to help your body recover.
Preventing Typhoid Fever
Get vaccinated
Drink only boiled or purified water
Wash hands frequently with soap
Avoid street food and raw vegetables
When to See a Doctor?
If you have:
Persistent high fever (above 103°F)
Severe stomach pain
Blood in stools
Extreme weakness
Consult a doctor immediately. Early treatment prevents complications.
Conclusion
Typhoid fever is treatable if detected early. Blood tests play a key role in diagnosis, helping doctors provide the right treatment. By maintaining good hygiene and getting tested when needed, you can protect yourself and your family from typhoid.
Consult Top Specialists
To Know More Consult Top Specialists
Dr. Sandhya Chandel
General Physician/ Internal Medicine Specialist
16 Years • MBBS, MD (Int. Med.), IDCCM
Bilaspur
Apollo Hospitals Seepat Road, Bilaspur
(125+ Patients)
Dr. Ashita Kuruvilla
General Practitioner
6 Years • MBBS
Kolkata
KVC CLINIC, Kolkata
Dr Syed Mateen Pasha
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Dr Aakash Andgi
General Physician/ Internal Medicine Specialist
9 Years • MBBS MD
Bengaluru
Apollo Clinic, JP nagar, Bengaluru
Dr. Anand Ravi
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
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Consult Top Specialists
Dr. Sandhya Chandel
General Physician/ Internal Medicine Specialist
16 Years • MBBS, MD (Int. Med.), IDCCM
Bilaspur
Apollo Hospitals Seepat Road, Bilaspur
(125+ Patients)
Dr. Ashita Kuruvilla
General Practitioner
6 Years • MBBS
Kolkata
KVC CLINIC, Kolkata
Dr Syed Mateen Pasha
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Dr Aakash Andgi
General Physician/ Internal Medicine Specialist
9 Years • MBBS MD
Bengaluru
Apollo Clinic, JP nagar, Bengaluru
Dr. Anand Ravi
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
