High levels of homocysteine in the blood are a risk factor for cardiovascular disease. Therefore, homocysteine testing should be performed in people at high risk or with cardiovascular disease.

Homocysteine test is a blood or urine test to check the concentration of Homocysteine. Homocysteine is a molecule synthesized from many amino acids, mainly methionine (protein found in animal meat, fish, milk and dairy products), vitamin B6, B12, folic acid.