GeneSight testing for antidepressants: is genetic testing worth it?
GeneSight and other pharmacogenomic tests can help guide medication choices. Here’s what they can and can’t tell you, and what they cost.
Earl Johns, MSN, PMHNP-BC
Board-certified psychiatric nurse practitioner and founder of Wellthy Psychiatry & Wellness
✓ Medically reviewed by Earl Johns, MSN, PMHNP-BC
If you’ve tried several antidepressants without relief, or had side effects that made you stop, you may have heard about GeneSight. It’s a pharmacogenomic test, meaning it looks at genes that affect how your body processes certain medications.
What GeneSight can tell you
The test uses a simple cheek swab and looks at genetic variations that influence how you metabolize many psychiatric medications. Results can flag medications that may need dose adjustments or that may be more likely to cause side effects for you.
What it can’t tell you
Genetic testing doesn’t pick “the right” medication on its own, and it doesn’t predict exactly how you’ll respond. It’s one tool alongside your history, symptoms, other medications and preferences. The best results come from combining testing with a thoughtful conversation with your provider.
Who it may help
People who have tried multiple medications without success.
People who had strong side effects on past medications.
People taking several medications that may interact.
Anyone who wants more information before starting treatment.
Cost and insurance
GeneSight’s cost depends on your insurance, and the company offers a cost estimator and financial assistance. At Wellthy Psychiatry, testing is always optional and discussed together before ordering.
Current self-pay rates, testing costs and policies are listed on our fees and policies page. Self-pay clients receive a Good Faith Estimate when scheduling.
Care in San Francisco and across California
Wellthy Psychiatry is an LGBTQ-owned practice led by Earl Johns, MSN, PMHNP-BC, a board-certified psychiatric nurse practitioner offering medication management and therapy in San Francisco and by telehealth across California. If you’re looking for a gay or LGBTQ+ therapist in San Francisco, LGBTQ+-affirming psychiatric care in San Francisco, or affirming therapy anywhere in California, we’d love to help. Book a free 15-minute consult.
About the author
Earl Johns, MSN, PMHNP-BC
Board-certified psychiatric nurse practitioner · UCSF-trained · Founder of Wellthy Psychiatry & Wellness
Earl provides LGBTQ+ and neurodivergent-affirming psychiatric care, blending medication management, therapy and whole-person approaches. His background includes inpatient psychiatry and community mental health at Glenn County Behavioral Health and Equity Health, a federally qualified health center. He sees clients in San Francisco and by telehealth across California.
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