A Homocysteine test is a blood test that measures the level of homocysteine, an amino acid, in the blood. Homocysteine is not an essential amino acid, meaning it is not necessary to consume it through diet, and the body produces it by breaking down another amino acid called methionine.

Pre-test preparation: There is no specific preparation required for a homocysteine test.

Testing method: A small sample of blood is taken from a vein in your arm and sent to a laboratory for analysis.

Common symptoms: That may prompt your doctor to order a homocysteine test include: unexplained blood clots, heart disease, stroke, and cognitive decline.

Diagnosis: High levels of homocysteine in the blood are associated with an increased risk of heart disease, stroke, and other health problems. The test is used to help identify people at risk for these conditions and to monitor treatment for conditions related to homocysteine levels.

Reference range: The normal range for homocysteine levels in the blood varies depending on the laboratory that performs the test, but typically ranges from 5-15 micromoles per liter (µmol/L)

Normal values may vary depending on the laboratory that performs the test.

Medical disclaimer: The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. It is important to follow the instructions given by your doctor or the laboratory performing the test. If you have symptoms that suggest heart disease, stroke or cognitive decline, or have been advised to have a homocysteine test, it is important to work closely with your doctor to understand the results and any further actions that may be necessary to manage your health.