Homocysteine, Serum Concentration

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms of high homocysteine, such as fatigue, numbness, or tingling in your hands or feet. It’s also used to monitor conditions like heart disease, stroke risk, or certain genetic disorders (e.g., homocystinuria). Sometimes, it’s checked as part of a broader cardiovascular screening.

What Does the Result Mean?

High homocysteine levels may suggest an increased risk of blood vessel damage or clotting, which could affect heart health or circulation. Low levels are less concerning unless related to specific medications or conditions. Your provider will interpret results in the context of your overall health.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The sample is sent to a lab where it’s analyzed to measure homocysteine concentration using a sensitive immunoassay method.

What Can Affect Results?

Factors like certain medications (e.g., folic acid, vitamin B supplements), diet, alcohol use, or kidney function can influence homocysteine levels. Avoiding alcohol and taking supplements only as directed by your provider can help ensure accurate results.