Do I need to fast for a homocysteine test?

You may need to fast (not eat or drink) for 8–12 hours before a homocysteine test.

Does fasting affect homocysteine levels?

Elevated plasma total homocysteine (tHcy) levels, either measured in the fasting state or after oral methionine loading, are associated with an increased risk of atherothrombotic disease.

How do I check my homocysteine levels?

How is the homocysteine level measured? Homocysteine is measured using a simple blood test. If your homocysteine level is too high, you need to lower it. This is especially important if you have blockages in your blood vessels.

What do homocysteine levels indicate?

Homocysteine is an amino acid produced when proteins are broken down. A high homocysteine level, also called hyperhomocysteinemia, can contribute to arterial damage and blood clots in your blood vessels. High homocysteine levels usually indicate a deficiency in vitamin B-12 or folate.

Do you have to fast for a homocysteine test?

The homocysteine test consists of a blood test that measures the level of homocysteine in the blood. Am I required to fast? Yes. You must fast at least eight (8) hours prior to having your specimen collected. Is a doctor’s order required? No.

Why does the blood test for homocysteine levels?

That is because the body normally converts homocysteine into other products quickly. Since vitamins B6, B12, and folate are necessary to metabolize homocysteine, increased levels of the amino acid may be a sign of deficiency in those vitamins. This test determines the level of homocysteine in the blood and/or urine.

When to take homocysteine before or after pregnancy?

Women with known vitamin deficiency or those at risk for vitamin deficiencies should have regular homocysteine measurements, preferably before and once during pregnancy. Suspected cobalamin or folate deficiency – elevated levels are suggestive of folate or cobalamin deficiency.

Why are homocysteine levels higher in postprandial males?

Results are also increased in males, in postprandial, low physical activity, with smoking, with increased blood pressure or increased blood cholesterol level, renal impairment, or metabolic disease. Results may be decreased in pregnancy, due to hemodilution. Patients with a low intake of B vitamins have higher levels of homocysteine.