A 30 year-old female came to your office for a tuberculin skin test for a foster child physical examination. Before she can take care of a foster child in her home, she should get a physical examination and a tuberculin skin test. She reports that she got a BCG vaccine when she was a child. She has a complicated medical history significant for HIV positivity five years ago. She also reports she got some discomfort with a PPD test 7 years ago. How do you administer a TB skin test to this patient?
