homocysteine Test

Homocysteine is an amino acid C4H9NO2S found in animal metabolism and is usually a by-product of consuming meat. Increased amounts of homocysteine in the blood are associated with atherosclerosis, coronary heart disease, stroke, peripheral vascular disease and a possibility of Alzheimer's disease.

Homocysteine levels are greatly affected by diet (folic acid, vitamins B6 & B12) and by genetic factors. Studies found higher levels of vitamin B & folic Acid to have positive effects in partially lowering homocysteine levels in the blood.Foods high in folic acid are green, leafy vegetables and grain products; Vitamin B12 is Eggs and Milk and Vitamin B6 are peanuts, cashew nuts, potatoes and wheat products.

24 to 36 Hours

This test ordered to diagnose a deficiency of Vitamin B6, B12, and folic acid or in a case of homocystinuria. It may also be carried out as a part of a lipid profile assessment or as a follow up to a heart attack or stroke.

The common signs/symptoms are:

• Extreme tiredness and weakness
• Seizures
• Dislocation of the lens of the eye
• Abnormal bone structure
• Osteoporosis (weak bones)
• Blood clots
• Or decreased weight or rate of weight gain
• Slowed development in children
  
  

Preparatory instructions before the test *:

• Fasting Required.
• Fasting samples have to be collected after a minimum 10-12 hour overnight fasting status.
• Clear fluids like water is allowed during this period. Refrain from consumption of early morning beverages like tea, coffee and milk until specimen collection is completed.
• In case of diabetics on oral or injectable hypoglycemic agents, consult your physician about continuing with these medications prior to specimen collection.

Specimen type: Serum (Blood Sample)

Specimen collection procedure: Venipuncture (Collection of blood from a vein, usually from the arm)