The homocysteine test may be used a few different ways: 1  A health practitioner may order a homocysteine test to determine if a person has a vitamin B12 or folate deficiency. 2  Homocysteine may be ordered as part of a screen for people at high risk for heart attack or stroke.
https://www.labcorp.com/help/patient-test-info/homocysteine
Proposals for standardization of the nomenclature for homocysteine and. related compounds were published in 2000. By these proposals HcyH is. used to refer to the reduced molecule only. Other related compounds in. plasma include: free homocystine (Hcy‐Hcy, the oxidised dimeric form),
http://www.acb.org.uk/Nat%20Lab%20Med%20Hbk/Homocysteine.pdf
EDTA or heparin tubes: Place the specimen in a refrigerator or ice bath until the specimen can be centrifuged. Centrifuge the specimen as soon as possible and transfer the plasma to a plastic screw-capped vial. Dark/royal blue-top serum tube and dark/royal blue-top sodium heparin tubes are acceptable containers.
http://questdiagnostics.com/testcenter/BUOrderInfo.action?tc=31789&labCode=AMD
In cases of suspected malnutrition or vitamin B12 or folate deficiency, homocysteine levels may be elevated. If an individual does not get enough B vitamins and/or folate through diet or supplements, then the body may not be able to convert homocysteine to forms that can be used by the body.
https://www.labcorp.com/help/patient-test-info/homocysteine
A homocysteine blood test is done to: 1  Help identify vitamin B12 deficiency or folic acid deficiency. But other tests for these deficiencies are available. 2  Help identify a rare inherited disease (homocystinuria) that causes a deficiency of one of several enzymes needed to convert food to energy.
http://www.webmd.com/heart-disease/homocysteine
Reasons you may not be able to have the test or why the results may not be helpful include: 1  Going through menopause. 2  Having high blood pressure (hypertension). 3  Smoking or other tobacco use.  Having a family history of high homocysteine 1  levels. Drinking more than 2 to 3 cups of coffee a day over many years.
http://www.webmd.com/heart-disease/homocysteine
When used in conjunction with methylmalonic acid (MMA), these tests are useful to diagnose and monitor vitamin B12 (cobalamin) and folic acid deficiency and are often useful in evaluating macrocytosis (an elevated MCV, an erythrocytic index).
http://questdiagnostics.com/testcenter/BUOrderInfo.action?tc=31789&labCode=AMD
The term total. homocysteine (tHcy) refers to the homocysteine present in a sample. following reduction of all disulphides. 2 Sample requirements and precautions. 2.1 Medium in which measured. EDTA or heparin plasma, urine, dried blood spots. 2.2 Precautions re sampling, handling etc.
http://www.acb.org.uk/Nat%20Lab%20Med%20Hbk/Homocysteine.pdf
The homocysteine test may be used a few different ways: 1  A health practitioner may order a homocysteine test to determine if a person has a vitamin B12 or folate deficiency. The homocysteine concentration may be elevated before B12 and folate tests are abnormal.
https://www.labcorp.com/help/patient-test-info/homocysteine
A homocysteine blood test is done to: 1  Help identify vitamin B12 deficiency or folic acid deficiency. 2  Help identify a rare inherited disease (homocystinuria) that causes a deficiency of one of several enzymes needed to convert food to energy. 3  Help determine a cause for otherwise unexplained blood clots.
http://www.webmd.com/heart-disease/homocysteine
homocysteine routine test
Homocysteine is a test to determine if a person has a vitamin B12 or folate deficiency. Homocysteine test is used to determine if a person has a vitamin B12 or folate deficiency. 