Table 5 Sample format for results of Streptococcus pneumoniae isolate testing in a laboratory that routinely performs only oxacillin disk tests for penicillin (Pen) susceptibility and performs susceptibility tests for 3 additional antimicrobials for isolates that are suspected of being nonsusceptible to Pen. From: Analysis and Presentation of Cumulative Antibiograms: A New Consensus Guideline from the Clinical and Laboratory Standards Institute Clin Infect Dis. 2007;44(6):867-873. doi:10.1086/511864 Clin Infect Dis | © 2007 by the Infectious Diseases Society of America 1