Roche Cedex Bio User Manual

Roche Diagnostics
Operator’s Manual · Version 3.4 C-23
Cedex Bio analyzer 8 Data analysis methods
Photometric measurements
Results
This section explains the calibration modes and checks used to determine the results.
Quantitative result calculation
The curve parameters of the various calibration modes and the rates of the
calibrations are used to calculate the results.
Linear Interpolation calibration
mode
The standards are used to determine the result. If the rate is out of the range of the
standard rates, it is not possible to calculate the result. The result is then flagged with
Calc Error.
The standard concentrations right and left of the sample concentration in the
calibration curve are used to calculate the sample result using linear interpolation.
Linear Regression calibration
mode
This mode is used with controls and samples.
Results are determined according to the following equation:
Calibration Control Sample
Quantitative result calculation
Linear Interpolation lll
Linear Regression lll
Logit/Log 4 lll
Logit/Log 5 lll
Exponential 5 lll
Corrections
Volume correction lll
Compensation correction lll
Correlation correction lll
Calculation of replicate mean
l
Result calculation checks
Replicate Deviation check l
Stand. Curve Deviation check l
Test Range check (level concentration) ll
Reference Range check l
Laboratory conversion
lll
Table 5 Result calculation models and checks
Sample or control result in standard units.
Rate of sample or control.
Curve parameters.
CC
samp-n
RR
samp-n
R
0
–()F⋅=
CC
samp-n
RR
samp-n
R
0
F,

Roche Cedex Bio Specifications

General

Brand	Roche
Model	Cedex Bio
Category	Measuring Instruments
Language	English