Error Detection Limits
Reagent Blank (Absorbance or Rate)
User Defined Reagents UniCel DxC Systems Instructions For Use A13914
Page 9-16 October 2005
Error Detection Limits
Reagent Blank (Absorbance or Rate)
Reagent blank specifies the minimum and maximum absorbance or rate (method
dependent) for the reagent blank measured during the blank read window. If these
values are exceeded, the results are suppressed and flagged as blank absorbance/rate
high (BL ABS HI or BL RATE HI) or blank absorbance/rate low (BL ABS LO or BL
RATE LO).
Mean deviation is a measure of noise in the read window.
Reaction (Absorbance or Rate)
Reaction specifies the minimum and maximum absorbance or rate (method
dependent) measured during the reaction read window.
• For upgoing rate or endpoint reactions, if the reaction absorbance is less than the
Low Limit then results will be suppressed and flagged as RX ABS LO. Likewise, if
the High Limit is exceeded, the result is suppressed and flagged RX ABS HI.
• For downgoing rate methods, the Low Limit indicates the maximum rate observed
during the reaction read window.
• For downgoing endpoint methods, the Low Limit indicates the maximum
absorbance observed during the reaction read window.
Mean deviation is a measure of noise in the read window.
Table 9.27 Allowable Entries for Reagent Blank
Low Limit -1.500 to 2.200
High Limit -1.500 to 2.200
Mean Deviation 0.000 to 2.200
Table 9.28 Allowable Entries for Reaction
Low Limit -1.500 to 2.200
High Limit -1.500 to 2.200
Mean Deviation 0.000 to 2.200
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