Quality Assurance
Phadia 100 - User Manual
P a g e 8 . 1 0
12-3501-20/12
Rule 1
: 1
2s
means one observation exceeding x ± 2 SD. This provides a “warning”
and need for further inspection of control data in the assay run.
Rule 2:
1
3s
means a run is not accepted if one result is outside x ± 3 SD. This rule
is mainly sensitive to random errors but can also detect large systematic errors.
Rule 3:
2
2s
means a run is not accepted if two consecutive observations are
outside the same limit, 2 SD or -2 SD. This does not apply only to the
same control sample. A run is rejected if two different control samples in the
same run behave as described above. This rule is sensitive to systematic errors.
Rule 4:
R
4s
means a run is rejected when the difference between two control
samples within a run exceeds 4 SD, e.g., one control is o2 SD and the
other is outside -2 SD. This rule is sensitive to random errors.
Содержание Phadia 100
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Страница 348: ...Phadia 100 User Manual Index 12 3501 20 12 Page 15 1 15 Chapter 15 Index...