CMT Laboratory Quality Control and Management 3

Question 1

What is the analytical measurement range (AMR) of a laboratory test?

Accepted Answer

The range of analyte concentrations that can be measured directly without specimen modification

Answer

The analytical measurement range (AMR) is the range of analyte concentrations that an instrument can directly measure without dilution, concentration, or other specimen modification.

Question 2

Which Westgard rule is triggered when four consecutive QC values all fall on the same side of the mean beyond ±1 SD, indicating a systematic shift?

Accepted Answer

4₁s rule

Answer

The 4₁s rule is triggered when four consecutive QC values all exceed ±1 SD on the same side of the mean, indicating a systematic shift or trend.

Question 3

In laboratory management, what does 'turnaround time' (TAT) measure?

Accepted Answer

The total time from specimen collection to result reporting to the clinician

Answer

Turnaround time (TAT) measures the total time from specimen collection (or receipt in the lab) to when the result is available to the ordering clinician, and is a key performance indicator.

Question 4

What is the purpose of establishing reference ranges in a clinical laboratory?

Accepted Answer

To define the interval of values expected in a healthy reference population

Answer

Reference ranges define the expected interval of values found in a healthy reference population, helping clinicians interpret whether a patient's result is within normal limits.

Question 5

Which document provides the legally binding minimum quality standards for laboratory testing in the United States?

Accepted Answer

CLIA (Clinical Laboratory Improvement Amendments) regulations

Answer

CLIA regulations are federal law that establish legally binding minimum standards for laboratory quality, personnel, and testing procedures, enforced by CMS.

CMT - Certified Medical Technologist Practice Test

CMT - Certified Medical Technologist Practice Test

CMT Laboratory Quality Control and Management 3