1. Adult participants cared for by a participating provider at University of Chicago Medical Center.
2. Participants must be at least 18 years of age.
3. Participants prescribed 5 or medication medications and taking a perpetrator drug or a drug with actionable pharmacogenomic information.
You may not be if
1. Participants who have undergone, or are being actively considered for, liver or kidney transplantation.
2. Participation in another pharmacogenomic study.
3. Participants who have previously received genotyping from another source.
4. Inability to understand and give informed consent to participate.
Inclusion of Women, Minorities, and Other Underrepresented Populations Individuals of all races and ethnic groups and genders are eligible for this trial.
