2.8.1 Quality Management Flashcards
Process used to ensure that the daily laboratory are generated from appropriate patient specimens following standard procedures and using metrics and monitors throughout the preanalytical, analytical and postanalytical processes
Quality control
Quality control ensure _______ and ________ results
Accurate and Precise
QC samples are usually run:
- At the beginning of each shift
- Before an instrument is serviced
- When Reagents lots are changed
- After calibration
- When results of the analytes seem inappropriate
Which of the following does not belong?
Before an instrument is serviced
should be after
Systematic process that ensures a quality laboratory service and result every time, all the time
Quality Assurance
A series of statistical calculations to determine whether variations in QC are random or systemic, giving guidance to acceptability and reportability of accurate laboratory test values
Westgard’s quality management framework
instrument errors, sample errors or human errors
a. Random error
b. Systematic error
a
Reagents and standards
a. Random error
b. Systematic error
b
Cause Imprecision
a. Random error
b. Systematic error
a
Cause inaccuracy
a. Random error
b. Systematic error
b
To determine this error, it is done through replication of experiment
a. Random error
b. Systematic error
a
To determine this error, it is done through Comparison of methods
a. Random error
b. Systematic error
b
Phases of Quality assurance
Preanalytical, analytical, Postanalytical phase
Used to detect errors in accuracy and precision over time
Levey-Jennings control chart
more than 6 consecutive values fall in one side of the mean
Shift
13s us rejected for probable randome error
T or F
T
