01-10-2009, 08:14 PM
is seen by his family practice physician during a routine office visit. The man complains of not feeling well for the last three months. Further questioning reveals that the patient has a chronic, unproductive cough that he attributes to an old smoking history. Physical examination is notable for a 15-pound weight loss since the last office visit three months previously. A multinodular infiltrate is seen in the lung field behind and above the right clavicle.
The strongest definitive identification of the pathogen responsible for this patient's disease would be provided by a positive result on which of the following biochemical tests?
A. Arylsulfatase
B. Heat-stable catalase
C. Niacin
D. Nitrate reductase
E. Urease
The strongest definitive identification of the pathogen responsible for this patient's disease would be provided by a positive result on which of the following biochemical tests?
A. Arylsulfatase
B. Heat-stable catalase
C. Niacin
D. Nitrate reductase
E. Urease