E-66 Rapidlab 1200 Operator’s Guide: System Specifications
02087462 Rev.V
Recovery and Precision of Hemoglobin Fractions in Human
Whole Blood
For testing capillary, tHb, and syringe modes, blood was collected in heparinized vacuum
tubes. It was tonometered at 37°C or adjusted chemically. Three target levels of tHb were
prepared by separating the red cells from the plasma and recombining appropriately. For
each run, 3 replicates of each level were run on a minimum of 3 Rapidlab
1265 systems.
The mean bias was determined by taking the difference between the Rapidlab
1265 system
mean and the reference methods mean. The mean bias and the pooled within run standard
deviation were determined for each blood preparation and sampling mode.
The following tables summarize the results of the Rapidlab 1265 CO-ox module recovery
and precision testing.
Table E-63 Rapidlab 1265 CO-ox Module Recovery and Precision with Total
Hemoglobin of ~6 g/dL and Oxyhemoglobin > 75%
Analyte Mode
*
* tHb mode performance is equivalent to sample device used
n
Mean
Reference Mean Bias WRSD
†
† WRSD: within-run standard deviation
tHb Capillary 61 6.20 0.29 0.08
tHb tHb 55 6.19 0.29 0.15
tHb Syringe 58 6.16 0.23 0.05
FO
2
Hb Capillary 63 86.67 -1.65 0.21
FO
2
Hb tHb 56 87.21 -1.27 0.42
FO
2
Hb Syringe 60 86.46 -1.52 0.34
FCOHb Capillary 63 5.00 0.67 0.21
FCOHb tHb 57 4.82 0.86 0.41
FCOHb Syringe 60 4.80 0.87 0.27
FMetHb Capillary 63 4.80 0.22 0.08
FMetHb tHb 57 5.48 -0.16 0.09
FMetHb Syringe 61 4.89 -0.06 0.10
FHHb tHb 55 2.68 -0.05 0.32
FHHb Capillary 63 3.54 0.29 0.14
FHHb Syringe 61 3.77 0.03 0.21
Table E-64 Rapidlab 1265 CO-ox Module Recovery and Precision with Total
Hemoglobin of ~14 g/dL and Oxyhemoglobin > 75%
Analyte Mode
*
n
Mean
Reference Mean Bias WRSD
†
tHb Capillary 60 14.14 0.33 0.12
tHb tHb 62 14.17 0.18 0.14
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