D
Patient 1
A CUSTOMER IN (B)(6) NOTIFIED BIOM?RIEUX OF DISCREPANT RESULTS ASSOCIATED WITH CHROMID? VRE ID AGAR (REFERENCE (B)(4)). THE CUSTOMER REPORTED THAT THE MEDIA HAD A BAD SELECTIVITY FOR SUSCEPTIBLE VANCOMYCIN ENTEROCOCCI. THE CUSTOMER PROVIDED FIVE (5) EXAMPLES THAT RESULTED IN FALSE POSITIVE RESULTS. THE SAMPLES WERE COLLECTED FROM THE RECTAL REGION FOR VRE SCREENING. THE PLATES WERE STREAKED DIRECTLY FROM THE COLLECTED RECTAL SWAB AND INCUBATED FOR 24 - 48 HOURS. RESULTS WERE AS FOLLOWS: SAMPLE A: GROWTH ON VRE AGAR AFTER 48 H INCUBATION, VITEK 2 SUSCEPTIBLE (MIC 1) NO ETEST RESULT. SAMPLE B: GROWTH ON VRE AGAR AFTER 48 H INCUBATION, VITEK 2 SUSCEPTIBLE (MIC 1) VA-ETEST = 1,0 ?G/ML (S). SAMPLE C: GROWTH ON VRE AGAR AFTER 24 H INCUBATION, VITEK 2 SUSCEPTIBLE (MIC 2) VA-ETEST = 2,0 ?G/ML (S). SAMPLE D: GROWTH ON VRE AGAR AFTER 24 H INCUBATION, VITEK 2 SUSCEPTIBLE (MIC 2) VA-ETEST = 4,0 ?G/ML (S). SAMPLE E: GROWTH ON VRE AGAR AFTER 48 H INCUBATION, VITEK 2 SUSCEPTIBLE (MIC 1) NO ETEST RESULT. THERE IS NO INDICATION OR REPORT FROM THE LABORATORY OR PHYSICIAN THAT THE DISCREPANT RESULT LED TO ANY ADVERSE EVENT RELATED TO A PATIENT'S STATE OF HEALTH. BIOM?RIEUX INVESTIGATION WILL BE INITIATED.