Roche cobas b 123 - Correlation to other methods

Roche Diagnostics
74 Instructions for Use · Version 13.0
3 Specifications cobas b 123 POC system
Performance data
Material: prepared whole blood
Number of cobas b 123 POC system instruments: 8
Material: prepared whole blood, including bilirubin
Number of cobas b 123 POC system instruments: 8
Correlation to other methods
pH
Unit: [pH units]
Material: whole blood
PO
2
Unit: [mmHg]
Material: whole blood
Parameter Unit Coefficient (Pearson) Range n
pH [---] 1.000 6.34–8.12 70
Hct [%] 1.000 11.7–81.7 198
tHb [g/dL] 1.000 3–29 580
SO
2
[%] 1.000 29–100 404
O
2
Hb
[%] 1.000 28.4–98.0 403
COHb [%] 1.000 5.7–79.7 438
MetHb [%] 1.000 4.3–80.9 449
HHb [%] 1.000 0–69.57 403
Table 3-90 Material: prepared whole blood
Parameter Unit Coefficient (Pearson) Range n
Bili [mg/dL] 1.000 3.4–47.9 566
Table 3-91 Material: prepared whole blood, including bilirubin
Comparison instrument No. of samples [n] Bias
(1)
Slope [b] Intercept [a] Pearson’s Corr. coeff. [r]
cobas b 221 system 691 0.009 0.99 0.08 0.99
Table 3-92 pH
(1) Median absolute bias
Comparison instrument No. of samples [n] Bias
(1)
Slope [b] Intercept [a] Pearson’s Corr. coeff. [r]
cobas b 221 system 677 --- 0.97 -0.76 1.00
Table 3-93 PO
2
(1) Median absolute bias