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1 2s
rejection warning
1 3s
reject a run when control observation is +/- 3s
2 2s
reject run when 2 consecutive control observations are on the same side of the mean and > +2s
4 1s
reject a run when 4 consecutive controls are on the same side of the mean and > +1s
R 4s
reject a run if the range or difference between the maximum and minimum controls are >4s
for how long can controls be stable for
1 yr
what are quality controls used for
to monitor and determine analytical errors by comparing expected values within control limits (ranges)
Precision error equation
[(value - mean)/mean]x100%
accuracy equation
[(value-true value)/true value] x 100%
what is the confidence interval
+/- 2s, 95% confidence interval
what are the types of systematic errors
proportional error
constant error
what are the requirements for QC material
stable
concentration must be within rangeĀ
matrix = synthetic.
Author
tanyalequang
ID
342518
Card Set
method evaluations
Description
-QC -systematic error -random error -precision -accuracy
Updated
2018-09-25T17:48:31Z
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