<prompt> Montoux test isDiagnostic test for TBFalse positive reaction seen in immunocompromisedHighly sensitive test and low specificityBoosting is maximum after 4 weeks of initial test  <response>: Mantoux test is screening test for latent TB infection.It has low sensitivity and specificity.False positive reaction - occur with BCG vaccination and False negative reactions - occur in immunocompromised individual.Increase in induration Boosting is seen between 1 - 5 weeks after intial test. 