FREE CMLA Quality Control & Assurance Questions and Answers

Question 1

What is the main purpose of quality control (QC) in the laboratory?

Accepted Answer

Ensure test accuracy

Answer

Quality control (QC) in the laboratory is a system of checks and procedures designed to monitor the analytical process and ensure the reliability and accuracy of test results. By running control samples with known values, QC helps identify and correct any issues that could affect patient diagnoses and treatment.

Question 2

Which of the following is an example of external quality assessment?

Accepted Answer

Proficiency testing

Answer

Proficiency testing (PT), also known as external quality assessment (EQA), involves laboratories analyzing unknown samples provided by an external organization and comparing their results to those of other labs. This process independently verifies a lab's testing accuracy and helps identify areas for improvement, ensuring consistent quality across different facilities.

Question 3

What is the purpose of using control samples in testing?

Accepted Answer

Verify test accuracy

Answer

Control samples are materials with known values that are run alongside patient samples during testing. Their primary purpose is to verify the accuracy and precision of the analytical method and instrumentation. If the control samples yield expected results, it indicates that the test system is functioning correctly.

Question 4

Which document outlines step-by-step procedures in a lab?

Accepted Answer

Standard Operating Procedure

Answer

A Standard Operating Procedure (SOP) is a detailed, step-by-step instruction set that guides laboratory personnel through specific tasks or processes. Its purpose is to ensure consistency, safety, and quality in all lab operations. Following SOPs helps maintain accuracy, comply with regulations, and minimize errors.

Question 5

When should quality control samples be run?

Accepted Answer

With every test run

Answer

Quality control (QC) samples should be run with every test run to ensure the accuracy and reliability of the testing system. This practice allows for immediate detection of any instrument malfunction or reagent degradation. Running QC samples frequently helps maintain the integrity of patient results and ensures that the testing process is performing within acceptable limits.

CMLA - Certified Lab Assistant Practice Test

CMLA - Certified Lab Assistant Practice Test

FREE CMLA Quality Control & Assurance Questions and Answers