Tuberculosis Testing

Who needs to get a tuberculosis (TB) test?

TB tests are required only for students who are identified as being at a higher risk. See the 2024-2025 New Student Vaccination and Tuberculin form, to find out if you need a TB test. 

What kind of TB test is required?

MIT accepts: 

  • the Mantoux 5TU PPD skin test, 

  • the T-spot test, or 

  • the Quantiferon-Gold test.

MIT will not accept multiple puncture tests such as tine, HEAF, or Monovac. 

How should the Mantoux/PPD TB test reaction be documented?

The TB test reaction must be documented in millimeters and signed by a physician or nurse. The physician or nurse must read the reaction within 48 to 72 hours after the test is administered.

MIT will not accept a simple reading of “positive” or “negative.” 

A reaction of 10mm or greater is considered positive. 

I have received a BCG (Bacillus Calmette–Guérin) vaccine in the past. Do I still need a TB test?

Yes. You still need a TB test if you are in the higher-risk group (see the 2024-2025 New Student Vaccination and Tuberculin form).  

What if I’ve had a previous positive TB test?

If you have had a previous positive TB test, you must provide: 

  1. Proof of a negative chest X-ray taken after your positive Mantoux, T-Spot, or Quantiferon-Gold TB test within 12 months from your registration date, and 

  1. Documentation that you have no symptoms of tuberculosis. 

Can I get a chest X-ray instead of a TB test?

No. You can only substitute a chest X-ray taken within 12 months from your registration date if you have had a previous Mantoux TB test that was positive with a reaction of 10mm or greater or a previous positive T-spot/QuantiFERON-Gold TB test.

What if I’ve had a history of tuberculosis infection?

If you have had a history of tuberculosis infection you must provide:

  1. Chest X-ray within 12 months from your registration date.
  2. Documentation that you have no current symptoms of tuberculosis.
  3. Documentation of treatment dates if previously treated.