OPTIMedical OPTI CCA-TS - Page 225

Operator’s Manual – OPTI CCA-TS BUN-3
ANALYTES BUN/UREA
Correlation to Other Methods
3
OPTICCAvsotherpH/BloodGas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 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 Coefcient Sy.x Range n
Analyzer A (serum) 0.940 2.97 0.9975 1.046 8 – 89 68
Analyzer B (serum) 1.058 -3.04 0.9988 1.12 4 – 106 102
Analyzer C (plasma) 0.993 0.44 0.9953 1.00 6 – 65 47
Analyzer D (plasma) 0.971 -0.27 0.9822 0.98 5 – 42 50
Analyzer E (whole blood) (mg/dL) 1.069 -0.62 0.9928 1.04 3.1 - 48 113
* 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. Tietz, Burtis C.(Ed.), Textbook of Clinical Chemistry and Molecular Diagnostics, 4
th
Ed., (Elsevier
Saunders, 2006), p. 802.
3. OPTI Medical. Model equation for regression statistics is: [results of OPTI Analyzer] = slope(m)
[comparative method results] + intercept(b).