HDL-Cholesterol: filling in a special tube for centrifugation (10 min at 6000 rpm) for extraction of blood serum to put aside in the refrigerator at 5°C. Standard value: > 1.69 mmol/l (no cardiovascular risk); 1.15-1.68 mmol/l (moderate cardiovascular risk); < 1.14 mmol/l (high cardiovascular risk)