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CYP2C19: Gene Variants and Medication Processing

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All NiaHealth tests are processed in Canadian-certified labs, which are highly trusted by the medical community for their accuracy and reliability. Blood and urine samples are collected by licensed medical professionals and processed using state-of-the-art equipment. NiaHealth is SOC2 Type 2 certified.

CYP2C19 helps break down many common medications, including antidepressants, heart medications, and stomach acid-reducing drugs. Genetic variants can cause these medications to be processed too slowly or too quickly, which may affect how well they work or the chance of side effects. Medication(s) analyzed: Amitriptyline, Citalopram, Clomipramine, Dexlansoprazole, Doxepin, Escitalopram, Imipramine, Lansoprazole, Omeprazole, Pantoprazole, Rabeprazole, Sertraline, Trimipramine, Clopidogrel

Available as an add-on

CYP2C19 is part of our Pharmacogenetic Test add-on, starting from $799.

Nurse Practitioner reviewed

Canadian-certified labs

SOC2 Type 2 certified

Why it matters

Reference ranges

Tanya ter Keurs
Clinically reviewed by  
Tanya ter Keurs
, NP · Last reviewed  
2026-08-05

This information is educational and does not replace medical advice, diagnosis, or treatment. Your results should be interpreted with a qualified healthcare professional in the context of your health history.