Homocysteine ek amino acid hai jo blood mein paya jata hai. Is test se blood mein homocysteine ka level measure kiya jata hai. High homocysteine level dil ki bimariyon (heart disease), stroke, vitamin B12 deficiency, folic acid deficiency aur kuch metabolic disorders ke risk se juda ho sakta hai. Doctor is test ko cardiovascular risk assessment aur vitamin deficiency evaluation ke liye recommend kar sakte hain.