Respiratory Therapist

Answer: D - A TB skin test can be interpreted 48-72 hours after administered.

A TB skin test (Mantoux test) is a diagnostic tool to identify people with prior primary tuberculosis or asymptomatic active infection. A small injection (0.1 mL) of tuberculin is injected transdermally. An infected person will have delayed hypersensitive reaction of the skin, present at 48-72 hours after the skin test has been administered.