Homocysteine
Also known as: Plasma total homocysteine
Formal name: Homocysteine
Related tests: Vitamin B12 and Folate, Cardiac risk assessment
At a Glance
Why Get Tested?
To determine if you are folate-deficient or B12-deficient; to help diagnose a rare inherited disorder called homocystinurina; to determine if you are at increased risk of heart attack or stroke
When to Get Tested?
When a doctor suspects a vitamin B12 or folate deficiency or suspects that an infant or young person may have homocystinuria; when you have had a heart attack or stroke and do not have traditional risk factors, as part of a cardiac risk assessment
Sample Required?
A blood sample taken by needle from a vein in the arm; sometimes a urine sample in addition to the blood sample
Test Preparation Needed?
You may be instructed to fast for 10 to 12 hours prior to this test.
