Tuberculosis: The Daily PANCE Blueprint
A healthy adult with no TB risk factors receives a TST. What induration size is positive?
A. 5 mm
B. 20 mm
C. 15 mm
D. 10 mm
E. 8 mm
Answer and topic summary
The answer is C. 15 mm
No TB risk factors → positive at ≥15 mm.
Other cutoffs:
- ≥10 mm for recent immigrants (<5 yrs) from high-prevalence areas, IVDU, residents/employees of high-risk congregate settings (prison, homeless shelter, nursing home), mycobacteriology lab staff, and comorbidities (e.g., DM, CKD, silicosis), and kids <4 or exposed to high-risk adults.
- ≥5 mm for HIV, recent close contacts, fibrotic CXR consistent with prior TB, organ transplant, or immunosuppressed (e.g., ≥15 mg prednisone daily).
View blueprint lesson
Smarty PANCE Content Blueprint Review:
Covered under ⇒ PANCE Blueprint Pulmonary ⇒ ⇒
Also covered as part of the Internal Medicine EOR, Emergency Medicine EOR, and Family Medicine PAEA EOR topic list
