A tuberculin skin test _____.
A)is read by the diameter and the elevation of the induration
B)is negative if a person has received the BCG vaccine
C)is read by the redness of the induration
D)two of the above

Question

Quizplus · Accepted Answer

A tuberculin skin test is read by both the diameter (size) and elevation (height) of the induration (swelling). This is the most accurate way to interpret the test results. Option B is not accurate as receiving the BCG vaccine may cause a false-positive reaction on the skin test. Option C is also not accurate as redness alone does not indicate a positive result. Therefore, option D is incorrect.

A Tuberculin Skin Test _____