Can I use asthma medications before the pulmonary function test?
Be prepared to adjust your medications. Some asthma medications can affect the test results. Different medications must be stopped at different intervals. For example, short-acting inhaled bronchodilators like salbutamol or terbutaline should be stopped eight hours before testing, but long-acting inhaled bronchodilators like salmeterol or formoterol cannot be taken for 48 hours. Your doctor will tell you how long before testing you should discontinue any medications you are taking. Don’t stop taking any of your asthma medications without first talking to your doctor.
