Quality Control

Question 1

What is quality control

Answer 1

a measure of precision, or how well the measurement system reproduces the same result over time
It is designed to detect, reduce, and correct deficiencies in a laboratory’s internal analytical process prior to the release of patient results, in order to improve the quality of the results reported by the laboratory.

Question 2

What is the purpose of IQC

Answer 2

to ensure day-to-day consistency of an analytical process and thus help to determine whether patient results are reliable enough to be released.

Question 3

What is the purpose of EQA

Answer 3

a procedure for the systematic assessment of the quality of analysis where unknown samples are tested at regular intervals.

Allows for comparison between labs, between countries, between analysers, between assays etc

Question 4

What rules are followed in the lab to ensure IQC

Answer 4

Westgard rules

Question 5

What is the name of the graphs used to analyse IQC

Answer 5

Levey-Jennings charts
LJ charts