Posted: August 15th, 2017

Marlyn is screened for tuberculosis during her first prenatal visit. An intradermal injection of purified protein derivative (PPD) of the tuberculin bacilli is given. She is considered to have a positive test for which of the following results?

Marlyn is screened for tuberculosis during her first prenatal visit. An intradermal injection of purified protein derivative (PPD) of the tuberculin bacilli is given. She is considered to have a positive test for which of the following results?

a. An indurated wheal under 10 mm in diameter appears in 6 to 12 hours.
b. An indurated wheal over 10 mm in diameter appears in 48 to 72 hours.
c. A flat circumcised area under 10 mm in diameter appears in 6 to 12 hours.
d. A flat circumcised area over 10 mm in diameter appears in 48 to 72 hours.