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The Online TST/QFT Interpreter
Version 2.0

 

The following tool estimates the risk of active tuberculosis for an individual with a tuberculin skin test reaction of 5+mm, based on his/her clinical profile. It is intended for adults tested with standard tuberculin (5 TU PPDS, or 2 TU RT-23). For more details about the algorithm used, go to the About page. The current version of the algorithm contains modifications of the original version, which was detailed in a paper by Menzies, et al. (2008). For further information see references, or contact dick.menzies@mcgill.ca

Please select the best response for each field:

TST Size:

QFT Result:

Age:

Age at immigration (if person immigrated to a low TB incidence country):

Country of birth:

BCG status:

Contact with active TB:

Please select all the conditions that currently apply to the patient:
(If none of these conditions apply, please select "None of these conditions")


Results

Once you have completed the form, click on "Submit" and your results will show up in this space.

For inquiries, and suggestions please contact dick.menzies@mcgill.ca.