Why is a pharmacogenetic (PG) test done?
A pharmacogenetic (PG) test can be done before or after a medicine is given. Before a medicine is given, a PG test is done to select a medicine and dose that will work best for you and cause the fewest unpleasant side effects. After a medicine is given, a PG test is done to help us understand why you are having problems with a medicine. The test may also help us decide if you would benefit from a different dose or different medicine.