Unexpected Sodium And Potassium Results - Bayer HealthCare RapidPoint 400 Series Service Manual

Probable Cause
For QC samples on a Rapidpoint 405
system, results for blood gas,
electrolytes, glucose and
hemoglobin were not reported
because the control does not contain
these parameters. Levels A and B
are the hematocrit control, which
does not contain other analytes.

Unexpected Sodium and Potassium Results

Sodium and potassium results, are higher than expected (sodium is higher
than 160 mmol/L or is beyond the measurement range.)
Probable Cause
If the problem is with a mixed venous
sample, the sample was analyzed
using a different sample type button
than the mixed venous button, or the
sample was analyzed without the
interference correction, which
caused results to be unreliable
because of the benzalkonium ion in
the sample.
A sample that contains an
interfering substance such as the
benzalkonium ion was analyzed.
166
Corrective Action
Analyze level 1, 2, or 3 to obtain QC results for
blood gas and electrolyte parameters and
glucose and hemoglobin.
Corrective Action
Analyze another sample that is not mixed
venous to verify results.
If parameters are out of calibration, wait until
the system calibrates the sensors
successfully. You can continue to analyze
samples but the system will not report some
parameters until the sensors are in
calibration.
Use the correct sample collection techniques
and anticoagulant as described in Collecting
Patient Samples in Section 1 in the
Rapidpoint 400 Series Operator's Manual.
Rev. C