Author Question: Many laboratories have the policy that, in the event of a Rule 12s violation, the control must be ... (Read 32 times)

KWilfred · **on:** Jun 25, 2018

Many laboratories have the policy that, in the event of a Rule 12s violation, the control must be repeated. If the result is in range, then patient specimens may be run. Why is this common practice controversial?

A) It circumvents the absolute rejection rule where any rule violation automatically results in rejection.
B) It does not follow the standard procedure of verifying a rejection under a single rule using multirule tests.
C) It supplants an internal quality-control procedure that was designed specifically to minimize the rate of false rejection.
D) All of the above.

Question 2

The following is a Levey-Jennings chart.

Which of the following is the best conclusion based on the circled data?

A) The data fall within 2 SD of the mean; so the recent run can be accepted.
B) The data have several outliers; so the recent run must be rejected.
C) The data comply with at least 3 of the Westgard Rules; so the recent run may be accepted.
D) The data violate the Westgard Rule of 10x; so the recent run must be rejected.