Table 6. Estimates of within-band analytical error for each brand of analyser expressed as a) standard deviation and b) coefficient of variation (%) based on means of Radiometer ABL90.
Analyser Brand
Lactate concentration band (mM)
0-1.9
2.0-4.9
5.0-9.9
10.0-14.9
15+
All
Standard deviation (mM)
Edge
.13
.14
.22
.47
.51
.35
i-STAT
.04
.45
.13
.06
.15
.20
Lactate Pro
.10
.12
.21
.30
.38
.29
Lactate Pro2
.06
.11
.22
.52
.60
.40
Radiometera
.09
.18
.47
.31
Scout+
.09
.09
.15
.35
.44
.31
Xpress
.10
.13
.34
.29
.87
.53
Coefficient of variation (%)
Edge
10.3
4.0
2.8
3.9
2.6
4.0
i-STAT
3.7
11.7
1.6
0.4
0.8
2.5
Lactate Pro
7.6
3.5
2.7
2.4
1.9
3.3
Lactate Pro2
5.1
3.0
2.7
4.3
3.0
4.4
Radiometera
2.4
1.9
2.4
2.9
Scout+
7.1
2.7
1.9
2.9
2.2
3.5
Xpress
7.5
3.7
4.4
2.4
4.4
5.9
a Comparison between Radiometer 715 versus the criterion Radiometer ABL90.