Awareness Technology Stat Fax 4200 Operator's Manual page 52

Cut Off Mode (Continued)
Selecting the QC Criteria field opens the Test Definition Cutoff Quality screen:
(mPC / mNC):
Enter the lowest
acceptable ratio for
the mean of the
positive controls to
the mean of the
negative controls
(mPC – mNC): Enter
the lowest
acceptable difference
for the mean
absorbance of the
positive controls
minus the mean
absorbance of the
negative controls.
The Blank is not subtracted in the Reverse Cutoff option. Pay close attention to "<" less
than and ">" greater than symbols when entering control limits in this case.
The Cut Off Mode Test Definition final page displays Interpretation Mode, Units, Decimals,
and number of Sample Replicates.
48 Stat Fax
TEST DEFINITION Cutoff Quality
Minimum COV
Maximum COV
(mPC/mNC)>=
(mPC-mNC)>=
Reversed
Quality Criteria screen
TEST DEFINITION Final page
Interpretation Mode
Units
Decimals
# Sample Replicates
<< Save
Cut Off Mode Test Definition - Final page
® 4200 Operator's Manual Doc. 4200 Rev. K
Backup to be used in case
controls read are too high or
too low.
^
v
Note: 'Reversed' field is 'YES'
Edit
when Low Absorbances are
Done
Positive and High Absorbances
are Negative.
Exit
Pos/Neg
Abs/COV ^
3 v
1
Edit
Run Print