Rapidlab 1245 System Performance Characteristics; Precision On Controls - Siemens Rapidlab 1200 Operator's Manual

E-18
Method comparison was quantified by obtaining estimates of proportional (slope), and
constant (intercept) bias, root mean square error (RMSE), and method correlation (R
square for r
analysis of the Rapidlab 1240 (dependent variable) versus the Rapidlab 865 (independent
variable). Results are summarized in the table below.
Table E-14
Mode
Capillary
Syringe
Micro-
capillary
Micro-
syringe
pH Only
Capillary
pH Only
Syringe
Table E-15
Mode
Capillary
Syringe
Micro-
capillary
Micro-
syringe

Rapidlab 1245 System Performance Characteristics

All performance data presented in this section was generated using the Rapidlab 1245
system. The system performed calibrations using the default settings recommended by
Siemens for optimum performance. All reported values were corrected to 760 mmHg. All
data was collected at room temperature (about 23°C). You should determine your own
performance characteristics in your laboratory with your Rapidlab 1245 system.

Precision on Controls

Quality control materials, including manual (QC) and automatic (AutomaticQC) were
analyzed on the Rapidlab 1245 system. Manual QC is performed by the operator while
AutomaticQC is performed automatically by the system based on the QC frequency
defined in the system software. The results are presented here.
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Rapidlab 1200 Operator's Guide: System Specifications
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coefficient of determination) by performing an ordinary least squares
Rapidlab 1240 Human Whole Blood Method Comparison—pH
n Slope Intercept
140 0.989 0.078
286 1.007 -0.050
144 0.984 0.133
144 1.021 -0.155
135 1.010 -0.064
271 1.011 -0.087
Rapidlab 1240 Human Whole Blood Method Comparison—pCO
n Slope Intercept
216 0.942 2.097
425 0.971 1.436
108 1.038 -2.566
216 1.075 -3.538
2
RMSE r Min
0.007 0.999 7.031
0.008 0.999 7.020
0.013 0.995 7.038
0.007 0.999 7.013
0.010 0.998 7.015
0.007 0.999 6.987
2
RMSE r Min
7.661 0.985 5.7
7.058 0.988 5.8
5.829 0.993 6.1
6.520 0.992 6.0
Max
7.680
7.676
7.671
7.651
7.678
7.676
2
Max
257.3
256.7
256.5
266.9