Rev. Date: 12-Jul-11
Art: 714176-00L
BUN - 3
Method Comparison (mg/dL)
Beckman Coulter
LX20
Dade Dimension
RxL-Xpand
Beckman Coulter
CX9
n
39
32
26
Sxx
0.36
0.48
0.39
Syy
0.67
0.34
0.60
Slope
1.03
1.05
1.00
Int’t
1.39
-0.28
-0.38
Sy.x
0.99
0.31
0.85
Xmin
5
5
7
Xmax
70
38
66
r
0.997
0.998
0.997
Cartridge Comparison
The performance characteristics of the sensors are equivalent in all cartridge configurations. System
difference analysis was performed on 40 patient samples using the i-STAT 6+ and i-STAT EC8+ cartridges.
In the 25–60 mg/dL range the average difference was -1.13. In the 60–140 mg/dL range the average
difference was -0.77.
Factors Affecting Results*
Endogenous ammonium ions will not affect results.
Test concentrations used were as per the CLSI guidance document,
6
unless otherwise indicated.
The following substances were shown not to significantly interfere with the i-STAT BUN assay at
the stated test concentrations:
Substance
Test Concentration
(mmol/L)
Acetaminophen
1.32
Acetylcysteine
10.2
Ascorbate
0.34
Bromide
37.5
β-Hydroxybuterate
6.0
7
Lactate
6.6
Salicylate
4.34
Thiocyanate
6.9
*It is possible that other interfering substances may be encountered. The degree of interference at concentrations other than those listed might not
be predictable.
Summary of Contents for i-STAT 1
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Page 627: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 6 REV DATE 16 Oct 12 ART 714446 00L ...
Page 628: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 7 REV DATE 16 Oct 12 ART 714446 00L ...
Page 629: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 8 REV DATE 16 Oct 12 ART 714446 00L ...
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