Pharmacogenomics — the study of how a person’s genetic makeup affects their response to medications — has practical applications that are available today, not in some future clinical setting. GeneSight testing analyzes a patient’s relevant genetic variants and provides guidance on which medications are likely to be effective, which may require dose adjustment, and which to avoid based on metabolic profiles. At Diversity Healthcare, we use GeneSight testing for patients who have not responded as expected to standard psychiatric and pain medications. The results frequently explain prior treatment failures and point toward more effective alternatives.