Roche Diagnostics
C-28
Operator’s Manual · Version 3.4
8 Data analysis methods Cedex Bio analyzer
Photometric measurements
Laboratory conversion
Results can be adjusted by using a laboratory conversion factor.
Laboratory units The conversion is carried out after every result calculation.
The sample units can be converted into any desired unit by means of a conversion
factor.
Conversion to another unit is carried out for replicates, control and sample results,
and the means of calibrators.
For replicates of calibrators:
For control, sample or mean of calibrators:
Replicate results of calibrators in laboratory units.
Results in standard units of controls and samples or replicates of
calibrators.
Control and sample results or mean of calibrators in laboratory units.
Only calibrators can be run in duplicates and a mean must then be
calculated. For QC and sample results no mean calculation is
required, since no duplicates or triplicates are run.
Control and sample results or mean of calibrators in standard units.
Factor in laboratory units (test parameter).
Number of replicates.
CL
samp-n
r() C
samp-n
F
unit
⋅=
CML
samp-n
r() CM
samp-n
F
unit
⋅=
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