GeneSight Testing in Boise and Idaho Falls at Gem State Psychiatry and Mental Health

Making each try count

In much of Idaho, a medicine that does not work can cost months, because the next appointment is far away and the drive is long. GeneSight, a lab test made by Myriad Genetics, looks at genes that shape how your body handles many psychiatric medicines. That gives your provider one more clue before choosing what to try next.

From cheek swab to report

A soft swab rubbed inside your cheek is mailed to the lab. Technicians look at genes such as CYP2D6 and CYP2C19, which control liver enzymes that clear many antidepressants. Some people inherit a slow version, so medicine builds up and side effects hit hard. Others inherit a fast version, so the medicine leaves the body before it can do its job.

Reading the results

The report sorts medicines into groups: use as directed, moderate gene-drug interaction, and significant gene-drug interaction. A flagged medicine is not off-limits, but your provider might choose another first, start lower, or monitor more closely.

Good reasons to test

• You have already been through two or more depression or anxiety medicines without much help
• Regular doses gave you side effects that seemed out of proportion
• You take several prescriptions, and your doctors are watching for interactions

If this would be your very first psychiatric medicine, testing usually is not needed yet.

What the research shows

The large GUIDED trial found higher response and remission rates when providers used GeneSight results, although it did not reach its main goal for overall symptom improvement. Expert guidelines from the Clinical Pharmacogenetics Implementation Consortium support adjusting some antidepressants based on CYP2D6 and CYP2C19 results. The test improves the odds; it does not promise an answer.

What it will not do

GeneSight does not diagnose any condition, and it cannot tell you for certain which medicine will work. The FDA has not approved it for choosing antidepressants. Your provider uses it alongside a full psychiatric evaluation, your history, and your preferences.

An example

Someone who felt sick and wired on two antidepressants at starting doses might learn they process those medicines slowly through CYP2D6. Their provider could choose a medicine cleared another way or start lower. The report explains the past and informs the next step.

Families and shared genes

Because genes run in families, a relative's strong reaction to a medicine can hint at your own. Share any family experiences with psychiatric medicines. Some families find that one member's testing sparks helpful conversations with others' doctors.

Who can see it

The report joins your protected medical record. GINA, a federal law passed in 2008, stops most employers from using genetic information to make job decisions, which matters to many INL and Micron employees who ask.

When to wait

If you have tried only one medicine, and only for a couple of weeks, your provider will likely suggest a full trial at a proper dose before testing. Testing earns its keep when there is a clear history of misses or side effects, and your provider will tell you honestly whether it is likely to change anything right now.

Step by step

First, you and your provider talk through whether results would actually change the next decision. If yes, the swab is done during your visit in Boise or Idaho Falls. When results come back, your provider sits down with you, explains each column, and lays out what it means for your options.

A report you keep

Genes do not change, so the report keeps its value for years. If you agree, we can send it to your family doctor or other prescribers, since some of the same enzymes handle pain, heart, and stomach medicines.

Getting started

Testing is ordered through your care with us and paired with medication management. Visit 911 W Jefferson St in Boise or 1846 1st St in Idaho Falls. Become a patient to ask whether it fits.