Please adhere to the following guidelines:
2 hours before TESTING
Abstain from smoking for at least 2 hours.
Abstain from caffeine products for at least 2 hours.
Abstain from using short acting bronchodilators for at least 2 hours.  (Bring your short-acting bronchodilators with you in the event you will need it after the test.)
6 hours before TESTING:
Abstain from alcohol for at least 6 hours.
24 hours before TESTING:
Abstain from using any stimulants for at least 24 hours (i.e. products containing ephedrine, pseudoephedrine, ephedra).
Abstain from any vigorous exercise within 24 hours.