A pharmacogenetic (PG) test can be done before or after a medicine is given.
Before a medicine is given: A PG test may help your doctor choose the medicine and dose that will work best for you.
After a medicine is given: A PG test may help the doctor understand why you are having problems with a medicine. The test may also help the doctor decide if a different dose or different medicine should be tried.
Some genes affect the way medicines work in the body. When comparing a group of people, there can be slight differences in each gene’s structure. These differences can affect how people react to medicine.
In the future, some of these common gene differences may be found to be associated with other medical conditions.
The test results may be important for other family members. Biologic brothers, sisters and parents may have one or more of the same tested genes in common.