title: I've had a cough and some wheezing that won't go away.  My doctor suspects asthma and ordered an exhaled nitric oxide test.  Can you tell me more about this test?
mesh_terms: D001249:Asthma / Q000175:diagnosis*; D001944:Breath Tests; D003371:Cough / Q000209:etiology; D006801:Humans; D009569:Nitric Oxide / Q000032:analysis*; D012135:Respiratory Sounds / Q000209:etiology
chemical_list: D009569:Nitric Oxide