Roche Diagnostics
42 Instructions for Use · Version 13.0
2 General description cobas b 123 POC system
Consumable information
Sensor phases
After inserting a new Sensor Cartridge, allow up to 60 minutes (typically) for the
cartridge to perform START-UP phase actions.
START-UP phase The START-UP phase begins when a new Sensor Cartridge is inserted into the
system. During the START-UP phase, the system performs actions on the
Sensor Cartridge to prepare it for its first measurement.
These actions are:
o WET-UP procedure: A standby solution moistens the Sensor Cartridge and
activates it at an increased temperature
o Couple check: This ensures that the correct temperatures for BG (37° C) and
ISE/Glu/Lac (30° C) parameters can be maintained
o Swelling time: Time between the end of the couple check and the first system
calibration
o First system calibration: New calibration data are generated during this
calibration. It takes longer than a normal system calibration
RUN-IN phase The RUN-IN phase begins after the START-UP phase and continues for a specific
time, which is defined on the Sensor Cartridge.
During the RUN-IN phase, you can measure without any impact to their accuracy or
precision. However, sample measurement times are longer.
Stable phase The stable phase begins at the end of the RUN-IN phase and ends when the in-use
time of the Sensor Cartridge expires.
IN-USE time The IN-USE time is the time from the beginning of the RUN-IN phase to the end of
the stable phase.
Phase Instrument performance
START-UP phase No measuring operation
RUN-IN phase Measuring operation with longer time-to-display or time-to-
ready
Stable phase Regular operation
IN-USE time Sensor Cartridge in-use time
Table 2-4 Sensor phases
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