Westgard Multirules Laboratory Operations Review 53
RULE EXPLANATION TYPE OF ERROR COMMENTS
(^1) 2S
(^1) 3S
(^2) 2S
R4S
(^4) 1S
(^10) x
Initiates testing of other rules. If no violation of
other rules, run is considered in control.
Rejection rule
Rejection rule
Rejection rule
Rejection rule
Rejection rule
Random
Systematic
Random
Systematic
Systematic
1 control >±2s from mean. Warning flag of possible
change in accuracy or precision.
1 control >±3s from mean
2 consecutive controls >2s from mean on same side
2 consecutive controls differ by >4s
4 consecutive controls >1s from mean on same side
10 consecutive controls on same side of mean