Infectious Disease• Updated 21 October 2026

HIV Test

A blood test that checks for HIV infection. In India, testing is free and confidential at government centres.

Results: Usually within a day Specimen: Blood

Quick Summary

Primary Purpose

To diagnose HIV infection, in pregnancy, after possible exposure, or as routine testing.

What It Measures

HIV antibodies and antigen (4th generation tests); positive results are confirmed with further tests.

Preparation

No preparation. Counselling is offered before and after the test.

Overview

Modern tests detect HIV within a few weeks of infection.

A negative test soon after exposure may need repeating after the window period.

What It Measures

HIV antibody/antigen

Screening test.

Confirmatory tests

For positive results.

How It's Performed

  1. 01

    Preparation

    Usually no special preparation. Tell the staff about medicines you take.

  2. 02

    Blood sample

    A small amount of blood is taken from a vein in your arm with a thin needle.

  3. 03

    Afterwards

    Press on the spot for a minute. A small bruise is common; you can go back to normal activities.

Interpreting Results & Next Steps

Discuss with Doctor

Results are confidential. Normal ranges differ between laboratories, ages and sexes; always use the range printed on your report and ask your doctor what your results mean.

If values are High:

A positive result is confirmed with more tests; treatment is available and effective.

Sources and further reading

Last updated 21 October 2026. For more detail, see these trusted health organisations.

Related Topics