TB Test Quality Assurance and Improvement 4

Question 1

A QA review reveals that healthcare workers in a high-risk facility are receiving annual TST rather than the recommended two-step baseline TST upon hire. This gap MOST directly risks:

Accepted Answer

Missing booster phenomenon reactions and misclassifying remote TB infection as new conversion

Answer

Without the two-step baseline, a boosted reaction at annual testing may be misinterpreted as a new conversion, triggering unnecessary treatment and contact investigations.

Question 2

Which of the following is the MOST appropriate frequency for reviewing TB testing quality metrics in a high-volume occupational health clinic?

Accepted Answer

Monthly, with quarterly trend analysis

Answer

Monthly review with quarterly trend analysis balances timely detection of problems with enough data to identify meaningful patterns.

Question 3

A TB program manager wants to benchmark their facility's TST false-negative rate. The MOST appropriate benchmark source is:

Accepted Answer

Published CDC guidelines and peer-reviewed TB surveillance data

Answer

CDC guidelines and peer-reviewed surveillance data provide evidence-based national benchmarks against which facility performance can be objectively compared.

Question 4

During a QA audit, it is discovered that a vial of tuberculin was stored at room temperature for 12 hours due to a refrigerator malfunction. The CORRECT action is to:

Accepted Answer

Discard the vial and retest any patients tested with it during that period

Answer

Tuberculin must be stored between 2–8°C; exposure to improper temperatures degrades potency, making results unreliable and requiring discard and repeat testing.

Question 5

Which of the following BEST describes the concept of 'interrater reliability' in the context of TB testing quality assurance?

Accepted Answer

The degree to which different readers measure and record TST induration consistently

Answer

Interrater reliability measures how consistently different staff members read and document the same TST induration, a key quality indicator for multi-provider programs.

(TB Test) Tuberculosis Test Certification Practice Test

(TB Test) Tuberculosis Test Certification Practice Test

TB Test Quality Assurance and Improvement 4