Question 1

Match the term with the definition.
-Precision

Accepted Answer

Precision refers to the consistency or repeatability of measurements, meaning how close the test results are to one another when the same sample is measured multiple times.

Question 2

Match the term with the appropriate definition.
-Mode

Accepted Answer

Mode refers to the value that appears most frequently in a given set of data, distinguishing it from the median (middle value) and the mean (mathematical average).

Question 3

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol:
Procedure name
Name of test method
-Specimen collection and storage

Accepted Answer

C

Question 4

Sensitivity is defined as the

Accepted Answer

Sensitivity measures the proportion of actual positives (people with the disease) correctly identified by the test, hence A is correct as it describes this concept accurately.

Question 5

Specificity is defined as the

Accepted Answer

Specificity is the ability of a test to correctly identify those without the disease, which is represented by the proportion of subjects without the specific disease or condition who have a negative test result.

Question 6

Match the term with the definition.
-Accuracy

Accepted Answer

Accuracy refers to how close a measurement or test result is to the true or actual value.

Question 7

A control specimen should be

Accepted Answer

Control specimens are essential for ensuring the accuracy and reliability of test results. They should be carried through the entire test procedure and treated in exactly the same way as any patient specimen to validate the test process and outcomes.

Question 8

An example of a preanalytical error is

Accepted Answer

Preanalytical errors refer to mistakes made before the analysis of a specimen begins, such as collecting a specimen from the wrong patient.

Question 9

The reference range is

Accepted Answer

The reference range encompasses all the given descriptions: it includes 95% of test results for a healthy reference population, has replaced the term "normal values" or "normal range," and is often stated in terms of standard deviation (SD) units.

Question 10

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol:
Procedure name
Name of test method
-Expected or normal (reference) values

Accepted Answer

The answer of Using the Clinical and Laboratory Standards Institute...

Question 11

Match the term with the definition.
-Standard

Accepted Answer

Standards are highly purified substances of a known composition used to calibrate instruments and validate test methods.

Question 12

Required regulation of clinical laboratories is achieved by (the)

Accepted Answer

The Clinical Laboratory Improvement Amendments of 1988 (CLIA) are federal standards that regulate all U.S. facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease.

Question 13

Match the term with the definition.
-Control

Accepted Answer

Control refers to a specimen with a known value that is similar in composition to the test specimen, used to ensure that the test system is working properly.

Question 14

Nonanalytical factors in quality assessment include

Accepted Answer

Nonanalytical factors in quality assessment refer to elements that are not directly related to the analytical process of testing but are crucial for ensuring overall quality. These include having qualified personnel who are well-trained and competent in their roles (A), and established laboratory policies that guide operations, ensure compliance with standards, and promote consistency and reliability in laboratory outputs (B). Quality control charts, on the other hand, are tools used in the analytical phase to monitor and evaluate the analytical performance of tests and processes.

Question 15

Match the term with the appropriate definition.
-Mean

Accepted Answer

Mean is defined as the mathematical average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers in the set.

Question 16

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol:
Procedure name
Name of test method
-Limitations

Accepted Answer

The answer of Using the Clinical and Laboratory Standards Institute...

Question 17

For testing of moderate complexity, quality control requires

Accepted Answer

For moderate complexity testing, quality control standards require performing control procedures using at least two levels of control material each day of testing to ensure the test is performing correctly across its measurement range.

Question 18

Match the term with the appropriate definition.
-Median

Accepted Answer

The median is defined as the middle value in a dataset when the values are arranged in ascending or descending order. If there is an even number of observations, the median is the average of the two middle numbers.

Question 19

Quality assessment programs include

Accepted Answer

Quality assessment programs in healthcare and laboratory settings encompass a wide range of processes to ensure accuracy and reliability. This includes patient identification to ensure that the correct patient's data is being analyzed, specimen procurement to ensure that samples are collected correctly, and specimen transportation and processing procedures to maintain the integrity of the samples throughout the testing process. All these components are crucial for accurate diagnostics and patient care.

Question 20

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol:
Procedure name
Name of test method
-Reagents, supplies, and equipment

Accepted Answer

The answer of Using the Clinical and Laboratory Standards Institute...

Quiz 7: Quality Assurance and Quality Control

Match the term with the definition. -Precision

Match the term with the appropriate definition. -Mode

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol: Procedure name Name of test method -Specimen collection and storage

Sensitivity is defined as the

Specificity is defined as the

Match the term with the definition. -Accuracy

A control specimen should be

An example of a preanalytical error is

The reference range is

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol: Procedure name Name of test method -Expected or normal (reference) values

Match the term with the definition. -Standard

Required regulation of clinical laboratories is achieved by (the)

Match the term with the definition. -Control

Nonanalytical factors in quality assessment include

Match the term with the appropriate definition. -Mean

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol: Procedure name Name of test method -Limitations

For testing of moderate complexity, quality control requires

Match the term with the appropriate definition. -Median

Quality assessment programs include

Using the Clinical and Laboratory Standards Institute (CLSI) protocol for a procedural format, insert the missing elements in the following written procedural protocol: Procedure name Name of test method -Reagents, supplies, and equipment