Proceeds from website advertising help sustain Lab Tests Online. AACC is a not-for-profit organization and does not endorse non-AACC products and services.

Clopidogrel (CYP2C19 Genotyping)

Print this article
Share this page:
Also known as: Clopidogrel Pharmacogenetic Testing; CYP2C19 Genotype
Formal name: CYP2C19 Sequence Genotype

At a Glance

Why Get Tested?

To help evaluate the likely response of a person at risk of a heart attack or stroke to the antiplatelet drug clopidogrel, which helps to prevent harmful blood clots from forming, by detecting variations in the gene (the CYP2C19 gene) that codes for one of the enzymes that metabolizes the drug

When to Get Tested?

A doctor might order this test prior to prescribing clopidogrel for you or during the initial treatment phase, and sometimes when you are taking clopidogrel and are not responding as expected.

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

None