Roche Diagnostics
122 Instructions for Use · Version 13.0
4 Theoretical foundations cobas b 123 POC system
Assigning a correlation factor to a parameter
Assigning a correlation factor to a parameter
WARNING
Incorrect patient results due to incorrect correlation factors
Correlation factors allow you to adapt your results to account for technical or laboratory-
specific factors that may affect the accuracy of your results. However, applying incorrect
correlation factors may lead to inaccurate results, which may endanger patient lives.
r If you use correlation factors to adapt your results to another analytical instrument or
method, you are responsible to ensure that these values are valid.
u Correlation to other methods (p. 74)
r Verify the behavior of the analytical instrument and/or the accuracy of the analytical
method that you are using as a reference before performing comparative
measurements.
q
Assigning a correlation factor to a parameter may shift measurement results that would be
outside of the measuring range to be inside the measuring range.
Roche does not guarantee measurement results for which correlation factors have been
assigned to parameters.
Correlation factors are used to align results for a parameter between different
analytical systems or methods.
p To add a correlation factor to a parameter
1
Utilities > Configuration > Measurement > Correlations
Figure 4-9 Correlations setup screen
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