PROPRIETARY INFORMATION
CONFIDENTIAL MATERIAL
Not for Customer Distribution
Assays/Reagents
AEROSET
®
System Troubleshooting Guide
109
94816-107—November 2004
AST
Ammonium Heparin Tube Not Acceptable
Refer to
ALT
in this section for details.
AST Activated
Ammonium Heparin Tube Not Acceptable
Refer to
ALT
in this section for details.
Observed Problem
Results within normal range are flagged with LL Result Error Code
Probable Cause(s)
Corrective Action(s)
The L-Linear Range parameter was
edited in the updated assay
parameter file, from the Limit of
Detection (LOD) value of 2.8 U/L to
the Limit of Quantitation (LOQ)
value of 7.8 U/L. The LOQ value is
rounded up to the number of decimal
places defined in the Decimal Places
field, and results with a value < 8 U/L
are flagged with a LL Result Error
Code.
NOTE:
LOQ was chosen as the
lower limit because it
represents the lowest limit at
which quantitative
information is reliable
(%CV = 20), rather than using
the LOD which represents the
noise associated with the
analytical system in the
absence of analyte. An
in-house normal range study is
planned.
If a report with a result < 8 U/L (no LL Result
Error Code) is desired, an alternate method
should be used.
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