IQC rule | Interpretation12 |
---|---|
Warning rule | |
12s | When one control exceeds 2 s limits, inspect control data further using additional rules |
Within run | |
13s | Reject run when one control result exceeds 3 s limits |
22s* | Reject run when both control results exceed the same+2 s or −2 s limits |
R4s | Reject run when one control result exceeds+2 s and the other exceeds −2 s within the same run |
Across runs | |
22s* | Reject when the previous result on the same IQC material exceeds the same+2 s or -2 s limit. |
41s* | Reject when last four consecutive control measurements (across different control material or on same control material) exceed the same+1 s or −1 s limit. |
10x | Reject when last 10 consecutive control measurements (across control materials or on same control material) fall on the same side of the mean |
*Note that these rules are used both across and within run.