Bayer HealthCare RapidPoint 400 Series Service Manual page 163

u The letter u appears next to the hematocrit (Hct) result on the Results screen and the
report
Probable Cause
The system did not correct the
hematocrit result for sodium (Na
+
or potassium (K ) because the
sodium or potassium measurement
is beyond the reporting range. The
system used a default value of
140 mmol/L for sodium or a value of
4 mmol/L for potassium to determine
the Hct result.
The system did not correct the
hematocrit result for sodium (Na
+
or potassium (K ) because the
sodium or potassium sensor is out
of calibration or is turned off in Setup.
The system used a default value of
140 mmol/L for sodium or a value of
4 mmol/L for potassium to determine
the Hct result.
Rev. C
Corrective Action
Analyze the sample again or analyze a QC sample to
+
) verify the result.
Subsequent calibrations may make sodium or
+
) potassium available again. If sodium or potassium
remains out of calibration, replace the cartridges as
described in Replacing the Measurement and Wash/
Waste Cartridges in Section 3 in the Rapidpoint 400
Series Operator's Manual.
Troubleshooting 163