Deck 4: Assuring Quality

Question 1

Proficiency testing compares the results for a specific test to:

A)Other laboratories
B)A standardized sample
C)An established range
D)A quality-control sample

Answer 1

A
Proficiency testing is a standardized process where results are gathered from various laboratories for a specific test and compared to assess quality of the results.

Question 2

Quality-assurance methods utilized during the postanalytical phase include all the items listed below except:

A)Transmission of results to the health-care provider in a timely manner
B)Appropriate notation of reference ranges included with patient results
C)Correct units of measurement reported with test results
D)Appropriate patient preparation for specimen collection

Answer 2

D
The testing process ends with reporting the results to the health-care provider in a timely manner with the necessary information included for appropriate interpretation of the results.

Question 3

Which of these are examples of quality-control methods used in the laboratory?

A)External quality control
B)Internal quality control
C)Levey-Jennings quality control
D)A and B

Answer 3

D
Quality control may be part of a test kit as an internal indicator or external quality control that is purchased from a commercial manufacturer.

Question 4

List three things that need to be considered when troubleshooting a problem with a test result.

Question 5

A valid result is always reported as positive.

Question 6

Which of these does not accurately describe the relationship between quality control and quality assurance?

A)Quality assurance is more closely associated with appropriate patient preparation than quality control is.
B)Quality assurance is more closely associated with testing procedures than quality control is.
C)Quality assurance is more closely associated with result management than quality control is.
D)Quality assurance is more closely associated with specimen handling and storage than quality control is.

Question 7

Quality-control testing is always performed at the same interval in every laboratory for every test.

Question 8

How are quality control and quality assurance associated with one another?

A)Quality control is part of quality assurance.
B)Quality assurance is part of quality control.
C)They are two unique methods that are not related.
D)Quality control and quality assurance are the same thing.

Question 9

Nancy is a medical assistant working in the laboratory at a busy family practice clinic. She has been asked to perform a CLIA-waived test for the presence of group A streptococcal infection. As she starts to prepare for the test, what are two items that she should verify that pertain to the testing procedure?

Question 10

It is only necessary to test a quality-control specimen when running a quantitative laboratory test.

Question 11

Which of these terms is used to describe how close a laboratory result is to the true value?

A)Precision
B)Trend
C)Accuracy
D)Mean

Question 12

Laboratory results that are reported as positive or negative are:

A)Quantitative
B)Qualitative
C)Critical
D)Reference

Question 13

It is possible for a set of quantitative quality-control results to be precise but not accurate.Short Answer

Question 14

Internal quality control provides a quantitative result.

Question 15

Precision measures how close a result is to the actual value for that test.

Question 16

Troubleshooting is a term used to describe investigative processes utilized when the quality-control results are not within the expected ranges.

Question 17

Results that are significantly outside the expected reference range and indicate a crisis patient condition are known as:

A)Competent results
B)Qualitative results
C)Critical results
D)Reference results

Question 18

In addition to the QC results and the date, what other information should be documented on a Quality Control Log?

A)No additional information is necessary.
B)Lot numbers, acceptable ranges, and interpretation of results
C)Clinical significance of test
D)All of the above

Question 19

Calibration verification is:

A)The verification of the success of a calibration process by analyzing quality-control samples
B)A process used to verify whether an employee is performing a testing procedure properly
C)When test results for a specific analyte are compared to results from other laboratories
D)Performed on all CLIA-waived test kits before performing patient testing