The<unk>  <unk>  is defined as a diagnosis tool 
to assess airway responsiveness to "sensitizing" substances as opposed to
nonspecific stimuli such as pharmacological agents (i.e. histamine, methacholine),
cold air and exercise.
Subjects are exposed to a suspected occupational agent in a controlled way under close supervision
in a hospital laboratory. The<unk> s has been considered as the
gold standard in confirming the diagnosis of occupational asthma.
Specific inhalation challenge
Spirometry
Skin allergy testing
Asthma bronchial challenge test
Alpha 1-antitrypsin deficiency screening
Respiratory distress assessment instrument
Mechanical ventilation protocol
Asthma pulmonary function test