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Operator’s Manual – OPTI CCA-TS
K-3
ANALYTES
POTASSIUM
All specific performance characteristics tests were run with default instrument calibration and after
normal recommended equipment quality control checks were performed (see Operator’s Manual).
Specimens at each level were analyzed in replicates of two for 20 days. The within-run and
between-day standard deviations were calculated by the analysis of variance method.
Linearity
3
Wherever possible, linearity for the OPTI CCA measurement has been established against reference
materials or methods. Potassium linearity is established by measurement of gravimetrically prepared,
N.I.S.T. traceable aqueous standard solutions (Potassium
ST
) and by measurement of N.I.S.T. Standard
Reference Material 956a Electrolytes in Human Serum (Potassium
NIST
)
Correlation
Slope
Intercept
Coefficient
Sy.x
Range
n
Potassium
ST
0.9964
0.116
0.99893
0.14
1.0 – 9.0
30
Potassium
NIST
0.9723
0.135
0.99956
0.05
2.0 – 6.0
18
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
Coefficient Sy.x
Range
n
Analyzer A (whole blood)
1.0816
-0.138
0.9857
0.13
2.1 – 6.4
103
Analyzer B (whole blood)
1.0225
-0.008
0.9673
0.15
2.5 – 6.0
173
Analyzer C (whole blood) 1.021 ± 0.019 -0.087 ± 0.077
0.9830
0.197
2.3 – 9.4
105
Analyzer D (whole blood) 1.050 ± 0.126 0.062 ± 0.055
0.9879
0.18
2.2 – 9.4
174
Analzyer E (serum)
1.084
-0.315
0.9855
0.181
2.9 – 7.5
68
Analyzer F (serum)
1.126
-0.397
0.9784
0.108
3.0 – 5.4
102
* For more information on specific 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. Tsien R,
New Calcium Indicators and Buffers with High Selectivity Against Magnesium and Protons
,
Biochemistry 19, p.2396-2404, 1980
.
3. OPTI Medical.
Model equation for regression statistics is: [results of OPTI Analyzer] = slope(m)
[comparative method results] + intercept(b)
.
Содержание OPTI CCA-TS
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