A 43-year-old man consults for diarrheal syndrome, and refers among his history 3 pneumonias in adulthood. Which of the following immunological studies should we request:
More than 2 lobar pneumonias make it necessary to rule out an immunologic deficit.
Serum immunoglobulin count and antibody production capacity test.
Phagocytosis test and oxidative metabolism of neutrophils.
Apoptosis test (programmed cell death) in the patient's circulating lymphocytes.
Study of the repertoire and clonality of T lymphocytes (alpha/beta).
In this patient it would not be appropriate to request any immunological study.
More than 2 lobar pneumonias make it necessary to rule out an immunologic deficit.