Typhoid Test

Also known as: Widal Test, Typhidot, Salmonella Antibody Test

Infectious Diseases Blood
Patient Friendly Summary

Typhoid testing is timing-sensitive: culture works best in week one, antibody tests after. A single Widal report is a clue, not a verdict — let your doctor weigh it.

What this test means

Typhoid tests look for antibodies against Salmonella typhi. The Widal test is common but can show false positives from past infection or vaccination — blood culture is more definitive early on.

Why it is done

It is done for prolonged fever with weakness, poor appetite, and abdominal discomfort, especially where food- or water-borne infection is possible.

Understanding your value

If your value is high

Rising antibody levels (titres) may suggest typhoid; doctors interpret the exact titre cut-offs with your symptoms and local patterns.

If your value is low

A negative result early in illness does not exclude typhoid — antibodies take time to develop.

About the normal range

Widal titres like 1:80 or 1:160 mean little in isolation; trends and clinical context decide. Blood culture in the first week is the stronger test.

When to consult a doctor

Persistent fever beyond 3–4 days deserves medical review. Complete the full antibiotic course if typhoid is confirmed to prevent relapse.

Frequently Asked Questions

It is done for prolonged fever with weakness, poor appetite, and abdominal discomfort, especially where food- or water-borne infection is possible. Your doctor will decide if this test is right for your situation.

Rising antibody levels (titres) may suggest typhoid; doctors interpret the exact titre cut-offs with your symptoms and local patterns. This needs clinical correlation — always discuss your report with your doctor.

A negative result early in illness does not exclude typhoid — antibodies take time to develop. This needs clinical correlation — always discuss your report with your doctor.

A single value rarely tells the whole story. Results need to be read together with your symptoms, history, and other tests. Please consult your doctor for a proper interpretation.

Quick Facts

  • TestTyphoid Test
  • Short formsWidal Test, Typhidot, Salmonella Antibody Test
  • Sample typeBlood
  • CategoryInfectious Diseases

Related Terms

Positive Borderline Infection

Specialists

General Medicine Pediatrics

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Disclaimer: This information is for patient education only and does not replace medical advice, diagnosis, or treatment. Always consult a qualified doctor.