Quality Assurance and Control Quiz

Which of the following best defines Quality Assurance (QA)?

• A process ensuring that laboratory results are as accurate as possible across all phases of testing

• A statistical method to analyze laboratory errors

• A type of calibration procedure for laboratory instruments

• A method for detecting a single analyte in a patient sample

What is the primary focus of Quality Control (QC) in the clinical laboratory?

• Managing administrative tasks

• Monitoring and assessing the analytical phase of testing

• Organizing laboratory workflow

• Ensuring patient confidentiality

Which term describes the ability of a test to correctly identify individuals with a disease?

• Specificity

• Accuracy

• Sensitivity

• Precision

Which term describes the ability of a test to correctly identify individuals without a disease?

• Sensitivity

• Specificity

• Reliability

• Precision

What does 'accuracy' refer to in laboratory testing?

• The ability to detect only the analyte of interest

• The closeness of the measured value to the true value

• The ability to give repeated results that are consistent

• The number of errors in the testing process

Precision refers to:

• The ability to detect an analyte at the lowest possible concentration

• The ability to provide consistent results when the same sample is tested multiple times

• The ability to identify diseased individuals

• The closeness of a test result to the actual value

Which term refers to the ability of a method to maintain accuracy and precision over time?

• Sensitivity

• Specificity

• Reliability

• Standardization

Which of the following is an example of internal quality control?

• Participation in a proficiency testing program

• Analyzing control samples alongside patient specimens

• Comparing results with other laboratories

• Regulatory inspections of laboratory performance

What is the main purpose of external quality control?

• Ensuring that laboratory personnel follow safety protocols

• Detecting and reducing systematic errors within the laboratory

• Comparing a laboratory’s performance with other laboratories

• Reducing manual errors in documentation

What is the main objective of quality control (QC)?

• To ensure that test results are accurate and reliable

• To monitor patient compliance

• To develop new laboratory tests

• To manage laboratory finances