Widal Test (Typhoid)
A blood test, widely used including in India, that looks for antibodies the body makes in response to the bacteria that cause typhoid fever.
Widal Test (Typhoid)
A blood test, widely used including in India, that looks for antibodies the body makes in response to the bacteria that cause typhoid fever.
Also known as
- Typhoid test
- Enteric fever
What it measures
- Antibody levels against typhoid-causing bacteria
Why a doctor may order it
A doctor may ask for it when typhoid fever is suspected, for example with a persistent fever.
What it helps evaluate
It gives indirect evidence only. The Widal test has limitations — it can cross-react with other infections, antibodies appear late, and specificity is poor — so on its own it can't confirm or rule out typhoid. Blood culture is the gold-standard test, and doctors also consider symptoms and other tests.
Preparation
No special preparation is generally listed. Ask your doctor or the lab.
Fasting
Ask your doctor or the lab whether any preparation is needed.
Important considerations
- Don't rely on a single Widal result. Ask your doctor whether other tests, such as a blood culture, are appropriate.
Discuss results with your doctor
A fever that lasts, or comes with severe symptoms, needs a doctor's assessment — don't self-diagnose from a test result.