RADIOMETER ABL90 FLEX - Page 317

ABL90 FLEX reference manual Appendix – Quality control
I-7
To correct the 2 SD control ranges for the above contributions, do the following:
Step Action
1.
Find the mean (X ) and the two times standard deviation (2 SD)
value in the Quality Control log (press: Data Logs > Quality
Control Log > Statistics) or calculate the values from the last 20
quality control measurements.
2. Find SD
total
in tables below.
3. Determine SD
corrected
as follows:
 
22
corrected total
SD 2 SD 2 SD 
4.
Determine the user-defined control ranges as
corrected
XSD .
5. Enter the user-defined control ranges for each parameter in the
Control Ranges setup program (press:
Menu > Utilities > Setup
> QC Setup Control Ranges > Edit).
SD
total
for QUALICHECK5+ solutions:
Level 1
Parameter: ABL90 FLEX analyzer
pH 0.0041
pCO
2
kPa 0.14
pO
2
kPa 0.31
cK
+
mmol/L 0.035
cNa
+
mmol/L 0.7
cCa
2+
mmol/L 0.021
cCl

mmol/L
1.26
cGlu mmol/L 0.1
cLac mmol/L 0.1
ctBil mol/L
2.5
ctHb g/dL 0.11
FHbF % 1
Other Hb derivatives % 0.13
Level 2
Parameter: ABL90 FLEX analyzer
pH 0.0054
pCO
2
kPa 0.09
pO
2
kPa 0.26
cK
+
mmol/L 0.036
cNa
+
mmol/L 0.6
Table 1: