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WorksheetsIQC DAN WESGUARD RULES
Total questions: 14
Worksheet time: 7mins
WHICH OF THIS GRAPH SHOWN IQC THAT IS LOW ACCURACY HIGH PRECISION
WHICH OF THIS GRAPH SHOWN IQC THAT IS HIGH ACCURACY HIGH PRECISION
WHICH OF THIS GRAPH SHOWN IQC THAT IS HIGH ACCURACY LOW PRECISION
What is the minimum data to establish mean?
3
20
10
If the analyzer is not in a good condition, can we establish mean?
YES
NO
What condition can be allowed to re-establish mean?
Change personal/operator
Change number lot of reagents
Major Maintenance
Do we need to re-establish mean when change number lot of QC?
Yes
No
Among the basic rules in Westgard scheme listed below, which type of rule that is used as a warning rule?
12s
13s
22s
Above is the Levey-Jennings chart measuring a single control. What Westgard rule is violated in this chart?
Rule 12s
Rule 13s
Rule 22s
The picture shows a Levey-Jennings chart. Which of the following is the best conclusion based on the circled data?
The data fall within 2SD of the mean. So the recent run can be accepted.
The data have several outliers. So the recent run must be rejected.
The data comply with at least 3 of the Wesgard Rules. So the recent run may be accepted.
The data violate the Wesgard Rule of 10x. So the recent run must be rejected.
USING ONLY THE 13S RULE TO EVALUATE A CONTROL RUN HAS A LOW RISK OF FALSELY REJECTING A RUN. WHAT IS A COMMON CONCERN ABOUT USING ONLY THIS RULE?
THE FREQUENCY OF ACCEPTABLE REJECTION IS 25%
THE NUMBER OF RANDOM ERRORS IS HIGH
THE RATE OF ERROR DETECTION IS LOW
THE RULE CANNOT DETECT A SYSTEMIC ERROR.
WHAT RULE (WESGARD RULE) CAN BE USED TO DESCRIBE THE LJ GRAPH IN THE PICTURE (RED CIRCLE).
6x
R4S
41s
12S
WHAT ACTION WILL YOU TAKING FOR THE (A) SHOWN IN THE LJ GRAPH?
REJECT THE RUN
ACCEPT THE RUN
ACCEPT THE RUN BUT ALERT FOR THE NEXT RUN OF QC
ALL ARE EXAMPLE OF EQA (EXTERNAL QUALITY ASSURANCE) OFFER BY THE SERVICES PROVIDER EXCEPT
EQAS
RIQAS
RCPA
IQC
