TB Test Quality Assurance and Improvement 5

Question 1

A state TB program conducts an unannounced site visit and observes staff drawing up tuberculin from a vial that has been open for 35 days. According to standard quality practice, this is:

Accepted Answer

A violation, as opened multi-dose vials should be discarded after 30 days

Answer

Once opened, multi-dose tuberculin vials must be discarded after 30 days regardless of the printed expiration date to ensure potency and sterility.

Question 2

A nurse reads a TST induration as 8 mm, but an independent reader measures 12 mm. To resolve the discrepancy, the BEST quality practice is to:

Accepted Answer

Have a third trained reader perform a blind measurement and use the median result

Answer

A blind third reading provides an independent measurement, and using the median of three readings reduces the influence of any single outlier.

Question 3

Which of the following scenarios represents a systems-level quality failure rather than an individual provider error?

Accepted Answer

A clinic lacks a written protocol specifying who is responsible for flagging missed TST readings

Answer

Absent written protocols create conditions where errors are predictable regardless of individual competence, representing a systems-level failure.

Question 4

A TB coordinator reviews IGRA results and notices that indeterminate results have increased since a new phlebotomist joined the team. The MOST appropriate immediate action is:

Accepted Answer

Directly observe the phlebotomist's blood collection technique and compare to manufacturer instructions

Answer

Direct observation of technique is the fastest way to identify whether the phlebotomist is deviating from proper collection steps that could cause indeterminate results.

Question 5

A TB testing program aims to achieve zero preventable documentation errors. This type of goal is BEST characterized as:

Accepted Answer

A stretch goal that drives continuous improvement culture

Answer

Zero-defect aspirational goals are stretch targets that motivate continuous improvement, even if perfect performance is rarely achieved in practice.

(TB Test) Tuberculosis Test Certification Practice Test

(TB Test) Tuberculosis Test Certification Practice Test

TB Test Quality Assurance and Improvement 5