Description
Why It’s Done:
The Homocysteine Serum/Plasma test is commonly performed to:
• Assess cardiovascular risk, as elevated homocysteine levels are a known risk factor for heart disease, stroke, and blood clots.
• Investigate causes of unexplained blood clotting or deep vein thrombosis (DVT).
• Evaluate nutritional deficiencies, as low levels of vitamin B12, B6, and folate can lead to elevated homocysteine levels.
• Monitor patients with conditions that affect homocysteine levels, such as kidney disease or certain genetic disorders.
• Screen individuals with a family history of heart disease or stroke, especially in cases where traditional risk factors (like cholesterol or blood pressure) are normal.
Preparation:
• Fasting may be required before the test, typically 12 hours prior to the blood draw, although it is not always necessary. Your healthcare provider will inform you if fasting is required.
• It’s important to inform your healthcare provider about any:
o Medications or supplements you are taking, as some can affect homocysteine levels (e.g., vitamin B12, folic acid, or methotrexate).
o Recent health conditions or treatments (e.g., kidney disease, vitamin deficiencies).
o Family history of cardiovascular disease or blood clotting disorders.
The test is performed by taking a blood sample, usually from a vein in your arm.
