9-2 Troubleshooting
9.1 Warning Indicators
This section lists warning indicators (flags) that can appear in test
results, along with possible solutions for each.
Capital-letter warning flags (
B
,
C,
Z
, etc.) indicate WBC-related
parameters, while lower-case flags (
b
,
c
,
p
, etc.) indicate RBC- or
PLT-related parameters. This is true for
all
measurement cycles.
Warning flags appear at the top right of the blank or sample results
screen.
9.1.1 Blank Flags
A blank must be run at the beginning of each day before running samples, controls, or calibrations, or
every 12 hours for 24-hour clinics. The blank measures the cleanliness of the analyzer and the purity of
the reagents.
If there are no warning flags and no values highlighted in red (accompanied by + or * ),
accept the blank. The analyzer is then ready to run patient samples.
If there are issues with the blank,
the warning shown at right appears.
Click OK to view the actual blank
results on the blank results screen.
Elevated values are shown in red.
High values for the following parameters cause the blank to fail and display these warning flags:
Other warning flags may be seen on a blank, such as c, C, and S.
Parameter High Blank Warning Flag Blank Value Limit
WBC B 0.50 x 10^9/l
EOS X 0.20 x 10^9/l
RBC b 0.05 x 10^12/l
HGB H 10 g/dl
PLT p 27 x 10^9/l
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