OPTIMedical OPTI CCA-TS - Page 186

pH-B-4 Operator’s Manual – OPTI CCA-TS
pH (Dry Sensor) ANALYTES
Correlation to Other Methods
3
OPTICCA-TSvsotherpHInstrumentsonwholebloodinatypicalsetting
pH analysis of heparinized whole blood samples was performed at multiple clinical sites. Samples were
analyzed on the OPTI CCA-TS in parallel with laboratory instrumentation operated by hospital personnel
and controlled following the hospital’s established procedures.
ComparativeMethod* Slope Intercept R
2
 Sy.x Range n
OPTI R 0.96 0.27 0.984 0.019 6.78 – 7.54 147
Analyzer A 1.03 -0.20 0.968 0.015 7.091 – 7.538 111
* For more information on specic analyzers used, please contact OPTI Medical Technical Support.
OPTI CCA-TS with B-Lac Cassette vs other pH Instruments on whole blood
(in-housetesting)
Whole blood samples from multiple donors were tonometered with different %CO
2
gas mixtures to
generate a wide range of pH values. The blood samples were analyzed in parallel on the B-Lac cassette
and other laboratory instruments.
ComparativeMethod* Slope Intercept R
2
 Sy.x Range n
Analyzer B 1.03 -0.21 0.996 0.016 6.578 - 7.661 174
Analyzer C 1.03 -0.19 0.996 0.015 6.582 - 7.701 174
* For more information on specic analyzers used, please contact OPTI Medical Technical Support.
References
1. Tietz, Norbert W., Ed., Clinical Guide to Laboratory Tests, 2nd Ed., (Philadelphia: W.B.Saunders,
Co., 1990) p. 436
.
2. Wolfbeis OS, Offenbacher H, Fluorescence Sensor for Monitoring Ionic Strength and Physiological
pH Values, Sensors and Actuators 9, p.85, 1986.
3. OPTI Medical. Model equation for regression statistics is: [results of OPTI Analyzer] = slope(m)
[comparative method results] + intercept(b).