VRE Screen: VR1604-1: Negative; VR1604-2: Negative; VR1604-3: VRE (vanB); VR1604-4: VRE (vanA) – Shipped: April 25, 2016
Participants’ results
Challenge Expected Results Positive Negative Other
VR1604-1 Negative 12 (acceptable)
VR1604-2 Negative 12 acceptable)
VR1604-3 VRE vanB positive 7 1 (unacceptable) 1 van A negative, van B not tested (ungraded)
3 indeterminate, presumptive VRE positive, refer (acceptable)
VR1604-4 VRE vanA positive 11 1 (unacceptable)
CMPT QC/QA/Statistics:
All samples were produced by CMPT. Samples were randomly selected for QC/QA. Statistics are not applicable in qualitative surveys. CMPT results are listed in the above table.
Samples VR1604-1 and -2 were E. faecalis vanA & B negative, sample 3 was E. faecalis vanB positive, but vanA negative and sample VR1604-4 was E. faecium vanA positive and vanB negative. All samples were homogenous and stable for 9 days from the date of production, April 19, 2016.
CMPT is a program of the Department of Pathology and Laboratory Medicine. The University of British Columbia, Vancouver, B.C. Canada.