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Error Code – Definitions
Exceeds Reference Range Low/High
UniCel DxC Systems Instructions For Use A13914
Troubleshooting Calibration and Result Errors
October 2005
Page 13-23
13
Exceeds Reference Range Low/High
Result exceeds operator defined reference ranges in reference range setup. Please refer
to
in CHAPTER 4, System Setup Options in this manual for
additional information.
Excessive Reference Drift – Sample to Calibration
The reference value for an ISE sample measurement drifted from the reference value
of the calibration and exceeded the limit. The units are measured in ADCs and are a
measurement of ISE sample electrode drift.
This flag may be triggered for CL, K, NA and CALC by excessive ambient room
temperature shifts. CL may also experience this flag when running many urine
samples or needs maintenance. Correct CL electrode by running serum samples to
recondition the electrode.
K and CALC may see this error when electrode is newly installed. Refer to CHAPTER
10, Maintenance in this manual for additional information.
A faulty calcium electrode MAY also cause sample reference drift errors on sodium
and potassium results.
Excessive Reference Drift – Sample to Sample
The reference ADC value for a sample drifted above the acceptable difference
between consecutive samples. The units are measured in ADCs and are a measurement
of reference reagent readings by sample electrode. This measures the ability of the
sample electrode to recover between samples.
This flag may be triggered for CL when running urine and serum samples together and
is an indication of CL electrode condition.
A faulty calcium electrode MAY also cause sample reference drift errors on sodium
and potassium results.
Greater Than X - OIR HI
Calculated result is greater than the Upper Instrument range. Result is not reported.
Greater Than X - ORR HI
Calculated result is greater than the Upper Reportable range. Result is not reported.
Initial Absorbance High/Low
The reaction absorbance data taken from the first spin cycle after sample or trigger
reagent inject has exceeded specifications. This is a measure of sample integrity and
may indicate a turbid or lipemic sample or in DAT chems, the presence of an
interfering substance.