OPTi CCA-TS2 - Page 217

Operator’s Manual – OPTI CCA-TS2 PO2-B-3
ANALYTES PO
2
(Dry Sensor)
Reproducibility
Controls
Within run precision (S
wr
) and Total Precision (S
T
), were determined from 2 runs per day with 2 replicates
per run over a period of 20 days following the CLSI guideline EP5-A2. Typical results for 3 different
control levels are shown below.
Dry PO
2
(mmHg) OPTI Check Level 1 OPTI Check Level 2 OPTI Check Level 3
Days Run 20 20 20
Total Average 73.5 103.5 139.1
Within Run St. Dev. (S
wr
) 1.4 0.9 1.4
Within Run % CV 1.8% 0.9% 1.0%
Total Precision St. Dev. (S
T
) 1.6 1.3 2.0
Total % CV 2.2% 1.3% 1.5%
Whole Blood
Within-run precision in whole blood samples was evaluated at 3 different concentrations on the OPTI
CCA-TS2. The table below shows the Averages, Standard Deviations and % CV calculated from 10
samples for each level.
Dry PO
2
(mmHg) Whole Blood
Level 1 Level 2 Level 3
Average 55.9 91.8 428.7
St. Dev 0.6 0.5 5.8
%CV 1.02% 0.57% 1.36%
n 10 10 10