Infectious Test

Widal Test (Typhoid)

Widal test checks blood for antibodies against Salmonella typhi (the typhoid bacteria). It helps diagnose typhoid fever when someone has prolonged fever and related symptoms.

Also known as: Typhoid test, Widal agglutination test, Salmonella antibody test

Normal Range

Parameter	Reference Range
Negative/Normal	Titer < 1:80
Suggestive of infection	Titer ≥ 1:160

Who Should Take This Test?

Recommended for prolonged fever (over 5-7 days), headache, weakness, abdominal pain, or suspected contaminated food/water. Often used alongside blood culture for confirmation.

How It Works

A blood sample is taken and tested for antibodies (O and H antigens) against Salmonella typhi bacteria.

Preparation

No special preparation is needed.

How Often?

When symptoms suggest typhoid infection

Symptoms to Watch

High fever that increases gradually

Headache

Weakness and fatigue

Abdominal pain

Loss of appetite

Constipation or diarrhea

Rose-colored spots on chest

Risk Factors

Consuming contaminated food or water

Poor sanitation

Travel to endemic areas

Close contact with infected person

Related Conditions

Typhoid FeverParatyphoid FeverEnteric Fever

Cost Comparison in India

Prices range from ₹150 to ₹299

Thyrocare

₹150Book

Dr Lal PathLabs

₹200Book

Metropolis Healthcare

₹299Book

Explore Other Tests

Complete Blood Count (CBC)

A CBC is a group of blood tests that measure the number and size of th...

₹240View →

Fasting Blood Sugar (FBS)

A blood glucose test measures the glucose levels in your blood after f...

₹55View →

HbA1c (Glycated Hemoglobin)

A hemoglobin A1C test is a blood test that shows your average level of...

₹368View →

Lipid Profile

A cholesterol test is a blood test that measures the amount of cholest...

₹399View →

Liver Function Test (LFT)

Liver function tests use a sample of your blood to measure several sub...

₹499View →

Kidney Function Test (KFT)

A kidney function test measures creatinine and other waste products in...

₹500View →

ESR (Erythrocyte Sedimentation Rate)

ESR measures how quickly red blood cells settle at the bottom of a tes...

₹50View →

Vitamin D (25-Hydroxy)

A vitamin D test measures the levels of vitamin D in your blood. Vitam...

₹1199View →

Vitamin B12

A vitamin B12 test measures the level of vitamin B12 in your blood. B1...

₹650View →

TSH (Thyroid Stimulating Hormone)

TSH stands for thyroid stimulating hormone made by the pituitary gland...

₹200View →

Pregnancy Test (Beta HCG)

The Beta HCG test measures human chorionic gonadotropin hormone in blo...

₹700View →

Dengue NS1 Antigen

Dengue NS1 test is a blood test that detects the dengue virus protein ...

₹720View →

Malaria Antigen Test

Malaria antigen test detects proteins from malaria parasites (e.g. Pla...

₹426View →

Urine Routine and Microscopy

A urine routine test checks the appearance and content of urine (color...

₹90View →

Urine Culture and Sensitivity

A urine culture test identifies bacteria or other germs causing a urin...

₹670View →

Chest X-Ray

A chest X-ray uses a small amount of radiation to create pictures of y...

₹250View →

Abdominal Ultrasound

An abdominal ultrasound uses high-frequency sound waves to create imag...

₹350View →

Electrocardiogram (ECG/EKG)

An electrocardiogram is a quick, painless test that records your heart...

₹80View →

Medical Disclaimer: The information provided here is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider.