110
Conventional measuring method
using your instruments
Element DC5X
IMPORTANT
Description of the correlation function
This function is designed to determine the correlation
between the measured data obtained using the Element
DC5X and the data obtained using the conventional
measuring method with your own instruments.
The X-axis shows the measured data obtained using your
instruments, and the Y- axis shows the measured data
obtained using the analyzer. The correlation regression
equation in this case is:
Y = aX + b
(mg/dl)
X
(mg/dl)
Element DC5X
Y=0.98X+5
0 10 600
0
600
A
B
Measurement using your instruments
After values for the two coefficients (a, b) are registered in
the analyzer memory, the analyzer performs compensation
calculations internally using the formula: X = (Y-b)/a. In
this way, measured data obtained using the analyzer are
adjusted to match measured data that would be obtained
using your instruments.
Method
In order to obtain a better correlation, it is essential to exercise caution regarding the amount of data and the sample.
1. You can configure a and b values by sample type.
2. The correlation function is independent of other compensation functions.
3. If values for (a, b) have already been input, old values will not be canceled as follows. If the old values are represented
as (a1, b1), and the new values as (a2, b2), the resulting values for (a, b) will be determined according to the following
formulas:
a=a1×a2
b=a1×b2+b1
4. Depending on the values input for (a, b), the apparent limits of the measurement range will shift as follows.
Value
under the
measurement
range.
Value
above the
measurement
range.
(Example) GLU measurements
If a=1 and b=0 (Y=X), the measurement range is 10 to 600
mg/dl. But by inputting regression coefficients as shown, the
lower limit changes to A and the upper limit to B.
Printout example
If the regression formula is Y = 0.98X + 5:
A = 5 mg/dl
B = 607 mg/dl
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