Existing patients

Genetic (PGx) testing

Pharmacogenomic testing to help guide medication choices. Please read this before you continue.

Written and medically reviewed by Dr David Crocker, MRCPsych (GMC 7411382). Last reviewed July 2026.

The link below takes you to AttoPGx, an independent company that offers pharmacogenomic (PGx) testing. This is a separate service bought directly from them. Please read the points below before going ahead.

What the test gives you

PGx testing uses a simple cheek swab to look at how your genes may affect the way your body responds to certain medications. The report covers many of the medicines used in mental health and ADHD care (including antidepressants, antipsychotics and stimulants), with guidance on how each may suit your genetic profile.

How your results are interpreted

Most findings are straightforward, and your psychiatrist can talk them through with you at an appointment. Some results, such as unusual metaboliser or carrier states, are more nuanced and can benefit from the input of a specialist in pharmacogenetics. For this reason, we ask that you only arrange testing after you have discussed it with your psychiatrist in an appointment, so that it is the right step for you and the results can be used properly in your care.

The company and your data

AttoDiagnostics Ltd is a UK company that processes samples in a UK laboratory. When you order a test, your sample and results are held by them under their own privacy policy. Your genetic information is sensitive personal data, so please read their privacy policy and make sure you are comfortable with it before you proceed. Your results are yours: it is your choice whether and when to share them with your psychiatrist.

Caledonian Psychiatry patients pay a discounted rate (currently £165, a saving of £130). Neither of our doctors receives any payment, commission or referral fee from AttoPGx. Practice policy: a test ordered through Caledonian Psychiatry’s discounted link by someone who is not a current, registered patient of the practice will not be reviewed by our doctors.

Please do not start, stop or change any medication on the basis of a PGx report without speaking to your prescriber first.

Not for emergencies

This page is not for emergencies and is not monitored urgently. If you or someone else is at immediate risk, call 999, attend A&E, or contact NHS 24 on 111. See our crisis and emergency contacts.

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