Siemens Rapidlab 1200, Operator'S Manual, Page: 380 / 448

E-20 Rapidlab 1200 Operator’s Guide: System Specifications
02087462 Rev.V
Recovery and Precision of Blood Gases in Human Whole Blood
To prepare samples for analysis, blood was collected in heparinized vacuum tubes and
tonometered at 37ºC for each of 6 levels for pH and 9 levels for
p CO
2
/ p O
2
. Multiple runs
were performed using these samples on a minimum of 3 Rapidlab 1245 systems.
† Total SD = total standard deviation
Table E-17 Rapidlab 1245 AutomaticQC Precision Results
Parameter Level n Mean WRSD
*
Total SD
†
pH 1 170 7.15 0.002 0.002
pH 2 172 7.352 0.001 0.002
pH 3 168 7.553 0.002 0.003
p CO
2
1 169 68.8 1.18 1.38
p CO
2
2 172 39.1 0.59 0.95
p CO
2
3 167 21.7 0.53 0.55
p O
2
1 170 153.2 0.84 0.87
p O
2
2 172 102.5 0.76 1.02
p O
2
3 168 67.3 1.40 1.54
tHb 1 171 18.0 0.26 0.27
tHb 2 162 14.0 0.08 0.10
tHb 3 170 8.0 0.08 0.08
F O
2
Hb 1 171 78.3 2.44 2.52
F O
2
Hb 2 162 92.0 0.36 0.39
F O
2
Hb 3 170 60.2 0.31 0.31
F COHb 1 171 3.2 2.18 2.27
F COHb 2 162 3.7 0.38 0.38
F COHb 3 170 18.2 0.23 0.27
F MetHb 1 171 15.9 0.59 0.60
F MetHb 2 162 1.8 0.25 0.25
F MetHb 3 170 5.8 0.44 0.45
F HHb 1 171 2.6 0.32 0.37
F HHb 2 162 2.4 0.17 0.20
F HHb 3 170 15.8 0.11 0.15
* WRSD = within-run standard deviation
† Total SD = total standard deviation