Roche cobas b 123 - Page 56

Roche Diagnostics
56 Instructions for Use · Version 13.0
3 Specifications cobas b 123 POC system
Performance data
Tonometered whole blood Whole blood was tonometered at 37°C with high-precision gas mixtures.
Prepared whole blood Expected values for prepared whole blood are based on reference methods.
pH
Unit: [pH units]
Material: prepared human whole blood, n=40
Material: cobas b 123 AutoQC Pack TRI-LEVEL, n=80
Material: cobas b 123 AutoCVC Pack, n=80
PO
2
Unit: [mmHg]
Material: tonometered human whole blood, 20 different probands, n=80
Material: cobas b 123 AutoQC Pack TRI-LEVEL, n=80
Mean S
R
(CV%) S
I
(CV%)
Sample 1 7.237 0.0029 0.04 0.0033 0.04
Sample 2 7.441 0.0029 0.03 0.0032 0.04
Sample 3 7.568 0.0054 0.07 0.0050 0.06
Table 3-2 pH material
Mean S
R
(CV%) S
I
(CV%)
Level 1 7.149 0.0026 0.04 0.0059 0.08
Level 2 7.393 0.0016 0.02 0.0043 0.06
Level 3 7.543 0.0016 0.02 0.0044 0.06
Table 3-3 pH material
Mean S
R
(CV%) S
I
(CV%)
Level 4 6.883 0.0017 0.02 0.0083 0.12
Level 5 7.731 0.0015 0.02 0.0061 0.08
Table 3-4 pH material
Mean S
R
(CV%) S
I
(CV%)
Sample 1 145.4 0.7404 0.51 3.2402 2.23
Sample 2 40.5 0.6888 1.70 2.4680 6.09
Sample 3 352.2 2.0866 0.59 8.7645 2.49
Table 3-5 PO
2
material
Mean S
R
(CV%) S
I
(CV%)
Level 1 58.5 1.0476 1.79 1.7558 3.00
Level 2 98.7 1.6680 1.69 3.5239 3.57
Level 3 147.6 1.1515 0.78 4.6708 3.17
Table 3-6 PO
2
material