Roche Cedex Bio - Calibration Mode Logit;Log 4

Roche Diagnostics
Operator’s Manual · Version 3.4 C-19
Cedex Bio analyzer 8 Data analysis methods
Photometric measurements
Calibration mode Logit/Log 4
The Logit/Log 4 mode is used to calculate nonlinear calibration curves. Between four
and six calibrators can be entered.
The curve parameters are calculated with a maximum of 150 iterations, using the
following equation:
Mean calibrator rate.
Calibrator values.
Curve parameters.
Concentration
A
n
A
x
A
3
A
2
A
1
C
1
C
2
C
3
C
x
C
n
Rates
RM
std-n
R
0
K
c
1 AB CT
std-n
ln⋅+()–[]exp+
-------------------------------------------------------------------------
+=
RM
std-n
CT
std-n
R
0
K
c
A, B,,