Identification of the type of carbapenemase produced by CP-CRE provides criticalinformation for clinical care and empiric antibiotic treatment, helps guidereal-time infection control response, and informs epidemiologic surveillance.National guidelines have recently emphasized the importance of PCR testing forspecific carbapenemase genes in the overall laboratory management of CRE.4,11 Our study showed that between 2013 and 2018, 33% of standard cultures thatgrew CRE at VAMCs were tested for carbapenemases and >50% of these weretested for at least 1 specific genetic mechanism. This evidence concerns the gene CP and infection.