OPTi CCA-TS2 - Page 191

pH-4 Operator’s Manual – OPTI CCA-TS2
pH ANALYTES
Correlation to Other Methods
4
OPTI CCA-TS vs other pH Instruments on whole blood in a typical setting
Excess blood aliquots from specimens collected for blood gas analyses were analyzed by both traditional
and non-traditional operators of blood gas equipment in hospital laboratories. The blood was analyzed
on the OPTI CCA-TS after obtaining the requisite results from existing instrumentation used for these
analyses and operated and controlled following their established procedures.
Correlation
Comparative Method* Slope Intercept Correlation
Coefcient
Sy.x Range n
Analyzer A (whole blood) 0.9269 0.534 0.9789 0.013 7.17 to 7.52 103
Analyzer B (whole blood) 1.0800 -0.579 0.9954 0.009 7.01 to 7.55 173
Analyzer C (whole blood) 1.126 ± 0.018 -0.946 ± 0.134 0.9868 0.018 7.09 to 7.58 105
Analyzer D (whole blood) 1.003 ± 0.008 -0.032 ± 0.058 0.9947 0.014 6.86 to 7.63 174
Analyzer E (whole blood) 1.104 ± 0.010 -0.739 ± 0.077 0.9919 0.014 6.81 to 7.62 183
* For more information on specic analyzers used, please contact OPTI Medical Technical Support.