Full formMedical & Health
TSTstands forTuberculin Skin Test
Full Form of TST
What is TST?
TST stands for Tuberculin Skin Test, a widely used diagnostic screening tool to determine whether a person has been exposed to Mycobacterium tuberculosis, the bacterium causing tuberculosis. In India, where tuberculosis remains a serious public health challenge with millions of cases reported annually under the National Tuberculosis Elimination Programme (NTEP), the TST plays a vital role in early detection and prevention efforts. Also known as the Mantoux test, it involves injecting a small amount of purified protein derivative (PPD) tuberculin into the inner surface of the forearm. The result is read within 48 to 72 hours by measuring the induration or swelling at the injection site. Healthcare workers, contact tracing teams, and pediatricians across government hospitals, primary health centres, and private clinics routinely administer this test. It is particularly significant for screening children, healthcare professionals, and individuals in close contact with active TB patients. The test is also relevant for medical aspirants preparing for NEET PG, AIIMS, and other competitive examinations, as questions on TST interpretation and clinical significance appear frequently in entrance tests and clinical postings.
TST का फुल फॉर्म
ट्यूबरकुलिन त्वचा परीक्षण
Example
The district hospital conducted a TST screening camp to identify latent TB cases among family members of newly diagnosed patients.
TST — frequently asked questions
What is the full form of TST?
TST stands for Tuberculin Skin Test, a diagnostic tool used to detect exposure to the tuberculosis-causing bacterium Mycobacterium tuberculosis.
How is the Tuberculin Skin Test performed in India?
A small amount of tuberculin PPD is injected into the inner forearm, and the induration or swelling is measured by a healthcare worker after 48 to 72 hours.
What is the difference between TST and the Mantoux test?
There is no difference. The Mantoux test is the standard technique used to perform the Tuberculin Skin Test, and both terms are often used interchangeably.