Mantoux / Tuberculin Sensitivity Test
No special preparation required
The Mantoux test, also known as the tuberculin sensitivity test, is a diagnostic tool used to determine if a person has been exposed to the bacterium that causes tuberculosis (TB). During the test, a small amount of purified protein derivative (PPD) is injected under the skin's surface. The injection site is then observed for any signs of a reaction, such as redness, swelling, or hardening of the skin, which can indicate exposure to the TB bacteria.
Frequently asked questions
The Mantoux test is considered a reliable diagnostic tool for detecting TB infection. But false-negative results can occur in people who have compromised immune systems, and false-positive results can occur in people who have been vaccinated with the BCG vaccine or have been exposed to nontuberculous mycobacteria.
The mantoux test is not usually painful, but some people may experience a mild burning or stinging sensation. The injection site may become itchy or swollen, but this usually goes away within a few hours.
The Mantoux test is considered safe, but there is a small risk of infection at the injection site. In very rare cases, a severe allergic reaction may occur.
The Mantoux test results are available within 48-72 hours (about 3 days) after the injection, as the healthcare provider needs to check the injection site for any signs of reaction.