what is a tb test for a job

what is a tb test for a job

What is a TB Test for a Job?

TB is short for tuberculosis and a TB test is required for certain jobs. TB tests detect if a person has been exposed to tuberculosis. If the test is positive, further diagnostic procedures are usually required.

Why Do Employers Require a TB Test?

Employers require a TB test to check if employees have been exposed to tuberculosis while working in a hospital, laboratory, school, nursing home, or other health care settings. This is to make sure that no employee is unknowingly spreading the disease in the environment.

What is Involved in a TB Test?

Tuberculosis testing usually involves two different kinds of tests:

  1. The Tuberculin Skin Test (TST) – involves injecting a small amount of purified protein derivative into the lower arm. After a few days, the patient will return to have the injection site checked for any reactions.
  2. The Interferon-gamma Release Assay (IGRA) – involves taking a blood sample to measure the person’s immune system response to tuberculosis.

How Long Does it Take to Get Test Results?

Depending on the type of test used, results may be available in 24 to 72 hours. Tests with a positive result must be followed up with a medical exam to confirm the diagnosis and rule out any false positives.


A TB test is an important requirement for some jobs, such as those in hospitals and healthcare settings. This test helps detect if a person has been exposed to tuberculosis, so that precautionary measures can be taken to prevent the spread of the disease. The two tests used for TB are usually either the Tuberculin Skin Test or the Interferon-Gamma Release Assay. Results may take between 24 to 72 hours.


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