In tests on seven people with nocturnal asthma, 13 non-nocturnal asthmatics and 11 non-asthmatics, lung function tests revealed that patients with nocturnal asthma had the highest levels of melatonin and the greatest drop in lung function overnight.

BBC: NEWS | Health | Sleep supplement asthma warning

If NSI can obtain all the data on the screening programs, particularly data from easily manipulated lung-function tests, Brickman said, it might be able to prove a coordinated scheme to extract fraudulent settlements.

FORBES: Magazine Article

Patients receiving dronedarone should have regular tests to monitor lung and liver function.

FORBES: Dronedarone (Multaq) Gets Another Drubbing in Europe