Bayer HealthCare Rapidlab 800 - Manual (Page 452)

800 Series Operator's Manual 5Ć42
Defining Correlation Coefficients
Use this procedure to define correlation coefficients. Correlation coefficients allow
you to adjust the patient results from an 800 system to match the patient results
from another system. You can specify correlation coefficients for slope and offset
(y-intercept). Refer to Appendix G, Correlation Adjustment, for the procedure to
determine correlation coefficients. Table 5-15 describes the slope and offset
correlation values.
Table 5Ć15.āăCorrelation Coefficient Values
Coefficient Default Values Definition
Slope 1.0 Slope of the line for the method you want the 800 system
to match.
Offset 0.0 Difference between the 800 system value and the method
you want to match.
Table 5-16 lists the correlation coefficient ranges for the listed base models and
base models with CO-ox module.
Table 5Ć16.āăCorrelation Coefficient Ranges
Parameter Slope Range Offset Range System
pH 0.8 – 1.2
±
9.9 840, 850, 860
pCO
2
0.8 – 1.2
±
99 840, 850, 860
pO
2
0.8 – 1.2
±
99 840, 850, 860
Na + 0.8 – 1.2
±
99 850, 860
K + 0.8 – 1.2
±
99 850, 860
Ca ++ 0.8 – 1.2
±
99 850, 860
Cl – 0.8 – 1.2
±
99 850, 860
Glucose 0.8 – 1.2
±
99 860
Lactate 0.5 – 1.2
±
99 860
tHb 0.8 – 1.2
±
99 base model with CO-ox module