At a Glance
Why Get Tested?
The detection of patients who are at risk of developing severe side effects if treated with the thiopurine drugs, azathioprine, mercaptopurine and thioguanine
When to Get Tested?
Prior to thiopurine drug treatment
A single blood sample taken from a vein in your arm
Test Preparation Needed?
There are no special preparations needed to collect the blood.