At a Glance
Why Get Tested?
To find out if you are at high risk of a heart attack or stroke; also used to determine if you are folate-deficient or vitamin B12-deficient as blood homocysteine concentration can be raised in both conditions
When to Get Tested?
If you have had a heart attack or stroke, particularly in the absence of traditional risk factors or as part of a cardiac risk assessment
A blood sample taken by needle from a vein in the arm
Test Preparation Needed?
You may be instructed to fast for 10 to 12 hours prior to this test