HSPD1 and tuberculosis: These isolates are routinely identified by conventional phenotypic techniques and PRA-hsp65 , and/or submitted to phenotypic drug susceptibility testing (DST), an assay currently performed if the patient meets one of these following criteria: has a positive culture at the 2nd month of treatment, has had contact with multidrug-resistant TB, is immunosuppressed, has a history of previous treatment or belongs to a vulnerable population (e.g., homeless, immigrant, indigenous, inpatient and prisoner populations) (MS 2011).