12 – Glossary and Abbreviations
193
Positive culture
accession that contains at least one positive or manual-positive vial and at least
one positive vial that is not marked as a contaminant
Positive vial vial that has triggered at least one positivity algorithm
Positive
Anonymous vial
vial with no sequence number that has triggered at least one positivity algorithm
reading gap condition where no readings have been taken or saved for at least 40 minutes
reentry window
5-hour window during which a removed vial can be reentered in order to
continue its protocol
Related vial
vials are related that have the same accession number; typically used to identify
all vials that originate from the same collected specimen
replacement
barcode
vial sequence with a medium type of 99; a barcode designed to replace the
original vial sequence barcode if it is damaged or unreadable by the barcode
scanner
sensor
in a vial, the material at the bottom of the vial is called the sensor; it contains a
dye that reacts with carbon dioxide released by organisms as a by-product of
metabolic activity; the dye modulates the amount of fluorescence emitted by
material in the sensor; the system analyzes the measured fluorescence to
determine if the culture is positive
sequence
barcode to identify BD BACTEC culture vials; barcode value is exactly 12 digits
and starts with 44; the third and fourth digits contain the medium type; the last 8
digits identify the vial
Sequenced vial vial that has an associated sequence number (i.e. is not anonymous)
Start of Protocol
date and time when the vial is first placed in the instrument; value is used to
calculate End of Protocol, Time in Protocol, and Time to Detection
station
format is Instrument-Drawer-RowColumn (nn-L-Lnn, where n is for number and
L is for letter)
Status
vial status; statuses include:
Type
Abbreviation shown on reports
Positive Positive
Negative Negative
Ongoing Ongoing
Manual Positive Man Pos
Manual Negative Man Neg
Pending Pending
test see media
TIP
Time in Protocol: calculated from time of entry into the instrument (the vial’s Start
of Protocol) until the current time (if in the instrument) or removal time (if
removed from the instrument), in the format of days;hours:minutes (DD;HH:MM)
Term Definition
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