Roche Diagnostics
Operator’s Manual · Version 3.0 151
Multiplate® analyzer 6 Configuration
Adjusting the internal control parameters for data alarms
Adjusting the internal control parameters for data alarms
The precision and correlation of duplicate sensor measurements are monitored
electronically. This function monitors the correlation coefficient of the two single
sensor measurements (CC), and the deviation from the mean (DIF).
The reference values are set by default to the minimum value of 0.98 for the
correlation coefficient (CC) and 20% maximum deviation from the mean (DIF).
These values could be adjusted individually.
A minimum aggregation threshold of 30 AU is set for the internal duplicate sensor
measurements. Measurement results below this threshold are not automatically
controlled. This threshold value can be manually adjusted.
q
Roche recommends that the internal control is not applied to measurements with low
aggregation results (i.e. < 30 AU) because of the higher relative deviations between the
two curves.
WARNING
Incorrect results due to disabled data alarms or changed internal control
parameters
Data alarms and their internal control parameters are an integral part of the quality control
system. They ensure that irregular measurements are flagged and appropriate actions can
be taken.
r For patient measurements, data alarms must be enabled to ensure safe usage of the
analyzer.
r For patient measurements, do not change the default values of internal control
parameters.
r Disabling data alarms or changing the default values of internal control parameters
should only be done for research use and requires a level 2 password.
p To adjust the internal control parameters for data alarms
1
Choose Configuration > Configure data alarms.
A window is displayed for entering a password.
2
Type the level 2 password and confirm.
The Data alarms window is displayed.
Figure 6-2 Adjusting data alarms values
3
Clear the Enable data alarms check box if you want to work without internal
control measurements (CC and DIF); select it if you want to work with internal
control measurements.
Disable data alarms only if you use the analyzer for research use!
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