#1
What is the primary goal of quality assurance in diagnostic testing?
To ensure the accuracy and reliability of test results
ExplanationMaintaining reliability and accuracy of test outcomes.
#2
Which of the following is a common method for ensuring the quality of diagnostic tests through internal quality control?
Routine calibration of equipment
ExplanationRegular calibration to maintain test accuracy.
#3
Which of the following is a critical factor in maintaining the quality of reagents used in diagnostic testing?
Proper storage and handling according to manufacturer guidelines
ExplanationMaintaining quality through proper storage and handling.
#4
What role does documentation play in the quality assurance process of diagnostic testing?
It is crucial for traceability, accountability, and continuous improvement of laboratory processes.
ExplanationDocumentation ensures traceability and improvement.
#5
Which of the following factors is crucial for maintaining the integrity of patient samples during transportation to the laboratory?
Ensuring proper packaging and following transportation guidelines
ExplanationMaintaining sample integrity through proper handling.
#6
What role does continuous training and education play in maintaining quality in diagnostic testing?
It ensures that laboratory staff stays updated on new technologies and best practices.
ExplanationKeeping staff updated on advancements and best practices.
#7
Which of the following is a key component of external quality assessment (EQA) in diagnostic testing?
Proficiency testing
ExplanationAssessing competency through external evaluation.
#8
What does the term 'sensitivity' refer to in the context of diagnostic testing?
The ability of a test to correctly identify those with the disease
ExplanationTest's accuracy in detecting individuals with the disease.
#9
In the context of quality control in diagnostic laboratories, what is the purpose of using control samples?
To ensure the test is producing accurate results
ExplanationVerifying accuracy through controlled samples.
#10
Which organization publishes guidelines for the standardization of laboratory practices worldwide?
International Organization for Standardization (ISO)
ExplanationEstablishing global standards for lab practices.
#11
What is the significance of the term 'precision' in diagnostic testing?
The consistency of test results when repeated under the same conditions
ExplanationConsistency in test outcomes under identical conditions.
#12
What role does the pre-analytical phase play in quality assurance in diagnostic testing?
It encompasses all the steps before the test sample is analyzed, affecting the quality of the test result.
ExplanationPre-analysis steps influencing result quality.
#13
What principle does the 'Westgard Rules' relate to in laboratory quality control?
Statistical rules for monitoring and controlling laboratory testing processes
ExplanationUtilizing statistical rules for process control.
#14
How does accreditation impact a diagnostic laboratory?
It signifies the laboratory meets specific quality and competency standards.
ExplanationAccreditation confirms quality and competency.
#15
In the context of quality assurance, what is the difference between precision and accuracy?
Precision is about the consistency of results, while accuracy is about the correctness of results.
ExplanationDistinguishing between result consistency and correctness.
#16
What does the acronym CAPA stand for in the context of quality assurance in diagnostic laboratories?
Corrective and Preventive Actions
ExplanationActions to rectify and prevent quality issues.
#17
What is the purpose of a control chart in the context of quality control in diagnostic testing?
To graphically display the stability and consistency of a process over time
ExplanationVisual representation of process stability and consistency.