What GeneSight is
GeneSight is a pharmacogenomic test made by Myriad Genetics. A simple cheek swab is sent to a lab, which looks at a panel of genes that affect how your body processes many psychiatric medicines. Some genes, like CYP2D6 and CYP2C19, control liver enzymes that break medicines down. If you break a medicine down unusually fast, it may not work. If you break it down slowly, side effects may pile up.
The report sorts common medicines into groups based on how your genes are likely to interact with them, from "use as directed" to "significant gene-drug interaction."
Who it may help
GeneSight is most useful for people who:
- Have tried two or more antidepressants or anxiety medicines without success
- Had strong side effects at normal doses
- Take several medicines and want to reduce interaction risks
- Want more information before starting a new medicine after a hard history
It is less useful as a first step for someone who has never tried medicine, since most people do well on standard choices.
What the evidence says
Research on pharmacogenomic testing is promising but mixed. A large trial called GUIDED found more people reached response and remission when providers used GeneSight results, though it did not meet its main goal for overall symptom improvement. Professional guidelines from the Clinical Pharmacogenetics Implementation Consortium support adjusting some medicines, such as certain SSRIs, based on CYP2D6 and CYP2C19 results. In short: it is a helpful tool, not a crystal ball.
What it does not do
GeneSight does not diagnose depression, anxiety, or any condition. It does not tell us which medicine will definitely work. Your history, symptoms, other health conditions, and preferences still matter most. Your provider uses the report as one input alongside a full psychiatric evaluation.
How it fits into care in Asheville
Many of our western North Carolina patients come to us after years of trial and error elsewhere. Some are musicians or artists who stopped treatment because side effects dulled their work. When the history suggests genetics might be playing a role, GeneSight can make the next choice more informed. After results come back, your provider reviews them with you in plain language and adjusts your plan through ongoing medication management.
The process
- Your provider decides with you whether testing makes sense
- A painless cheek swab is collected
- The sample goes to the lab for analysis
- Your provider reviews the report and explains what it means for your options
Results stay part of your medical record and can guide future decisions too, since your genes do not change.
A real-world example
Imagine someone who felt jittery and sick on two SSRIs at low doses. A GeneSight report might show that they break down certain SSRIs very slowly, which can lead to higher-than-expected levels in the body. That insight could steer their provider toward a different medicine or a lower starting dose. Results like this do not make the decision alone, but they can explain a frustrating history.
Privacy and your results
GeneSight results become part of your medical record and are shared with your care team. They are used to guide medication choices. If you have questions about how your genetic information is handled, your provider can walk you through them.
Questions to ask before testing
Ask your provider how the results will change your current plan, which medicines are being considered next, and whether your history suggests genetics may be a factor. Testing makes the most sense when the answer could shift a real decision, like which antidepressant to try next or whether to lower a starting dose.
Does testing replace trial and error?
Not entirely. It narrows the field and can help avoid choices likely to cause trouble, but every person still needs follow-up to see how a medicine actually works for them. Think of the report as a map with a few roads marked, not a GPS with one route.
Getting started
Visit us at 16 Biltmore Ave in downtown Asheville. GeneSight is ordered as part of your care with us, not as a standalone purchase. Become a patient to talk with a provider about whether it is right for you.
Why Choose Asheville Psychiatry and Mental Health?
- Providers across Asheville and western North Carolina who actually listen and take their time
- Now accepting new patients because waiting makes everything harder
- We accept most major insurance, Medicaid, and Medicare — and work with you on costs
- A practice that treats you like a person, not a number