TB Test Quality Assurance and Improvement 3

Question 1

A health department reviews TB testing records and finds that 30% of two-step TST results lack documentation of the second step. This finding is BEST addressed by:

Accepted Answer

Implementing a standardized tracking log that flags incomplete two-step sequences

Answer

A systematic tracking tool prevents incomplete two-step testing by ensuring every initiated sequence is flagged until both steps are documented.

Question 2

Which of the following BEST describes the purpose of proficiency testing in a TB IGRA laboratory?

Accepted Answer

To verify that the laboratory consistently produces accurate results using standardized samples

Answer

Proficiency testing uses standardized samples with known results to confirm that a laboratory's testing process reliably produces accurate outcomes.

Question 3

A clinic implements a new electronic reminder system to ensure TST results are read within 48–72 hours. After one month, unread results decrease by 40%. In the PDSA framework, this evaluation occurs in which phase?

Accepted Answer

Study

Answer

The Study phase involves analyzing data collected during the Do phase to determine whether the change produced the desired improvement.

Question 4

Which of the following is a leading indicator of TB testing quality, rather than a lagging indicator?

Accepted Answer

Staff competency assessment scores before testing season begins

Answer

Staff competency scores are leading indicators because they predict future performance before errors occur, unlike lagging indicators that measure past outcomes.

Question 5

A root cause analysis (RCA) of repeated TST reading errors reveals that the measuring ruler provided is not calibrated in millimeters. This is categorized as a:

Accepted Answer

Equipment/materials failure

Answer

An improperly calibrated or inappropriately scaled tool is an equipment and materials failure, not a human error, and requires replacement of the instrument.

(TB Test) Tuberculosis Test Certification Practice Test

(TB Test) Tuberculosis Test Certification Practice Test

TB Test Quality Assurance and Improvement 3