View source for Mantoux test

===Interpretation process===
According to the guidelines published by Centers for Disease Control and Prevention in 2005, the results are re-categorized into 3 parts based on their previous or baseline outcomes:{{cn|date=May 2024}}
* Baseline test: ≥10&nbsp;mm is positive (either first or second step); 0 to 9&nbsp;mm is negative
* Serial testing without known exposure: Increase of ≥10&nbsp;mm is positive
* Known exposure:
** ≥5&nbsp;mm is positive in patients with baseline of 0&nbsp;mm
** ≥10&nbsp;mm is positive in patients with negative baseline or previous screening result of >0&nbsp;mm