Roche Cedex Bio - Calibration Mode Logit;Log 5

Roche Diagnostics
C-20
Operator’s Manual · Version 3.4
8 Data analysis methods Cedex Bio analyzer
Photometric measurements
Calibration mode Logit/Log 5
The Logit/Log 5 mode is used to calculate nonlinear calibration curves. Five or 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.
RM
std n
R
0
K
c
1 AB CT
std n
ln⋅ CCT
std n
⋅++()–[]exp+
---------------------------------------------------------------------------------------------------------
+=
RM
std n
CT
std n
R
0
K
c
A, B,,
Concentration
A
n
A
x
A
3
A
2
A
1
C
1
C
2
C
3
C
x
C
n
Rates