Essential Biochemistry - Organ Function Tests (Section 2 - No. 28)
Increased plasma level of which of the following is a risk factor of CHD except:
LDL cholesterol
HDL-cholesterol
Triglyceride
Homocysteine
הֶסבֵּר
High levels of HDL cholesterol are protective against CHD (coronary heart disease), so it's not a risk factor.