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11 – Glossary
Term Definition
accession any number that is not exactly 12 digits starting with the numbers “44” (this is the
format of a vial sequence number; any other barcode is interpreted by the
instrument as an accession number)
activity displays Vial Entry, Positive Removal, Negative Removal, IDentify Anonymous displays;
so named because they represent the main user activities
Affected vial vial that resided in a station where an Incubation Failure was detected; or a vial
with a gap in test readings (reading gap) that exceeds a threshold defined as
potentially affecting positivity interpretation
algorithm mathematical formula that is used to interpret readings from the measurement
system to determine if microbial growth has occurred or is occurring
ambient temperature temperature of the room where the instrument is placed
Anonymous vial vial entered into the instrument without a sequence number
blocked station station that was blocked by user; the vial presence sensor is no longer active in
a blocked station, and no test readings are saved
cluster one to four BD BACTEC™ FX40 instruments attached to the same tablet PC
contaminant means of flagging a positive culture to indicate that the isolate is thought to be
clinically insignificant
culture all of the vials within an accession
degraded mode in a BD EpiCenter™ configuration, when a BD BACTEC™ FX instrument loses
communication with the BD EpiCenter™ master database, it enters a degraded
mode of operation; only limited operations can be performed
demographic data data that is associated to the patient, including: Accession, Patient Name,
Patient ID, Collection Date/Time, Hospital Service
directed mode the normal operating mode of a BD BACTEC™ FX40 system, where the
instrument and tablet PC are communicating normally
End of Protocol date and time when defined testing protocol for vial has been reached; if left in
instrument, vial testing continues
GMT Greenwich Mean Time (now referred to as UCT or Universal Coordinated Time)
home position the position the racks are placed in when a drawer is opened; this position is
near 0°.
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