A 28-year-old woman presents to the psychiatric-mental health nurse practitioner for evaluation of depression and anxiety. She states that her older sister and her mother have been on antidepressants "for years." She has avoided coming to the "crazy doctor" for "a long time." She is nervous about taking medication because she is worried about side effects. She asks about getting a genetic test to see which medication would work best for her. What is the PMHNP's most appropriate response?