For men normal is >40 mg/dl, and for women >50 mg/dl.
Our current guidelines suggest that >60 is a "negative" risk factor and <40 is a risk factor for heart
disease. As usual exceptions exist, and there are examples of patients with low HDL
who do not get heart disease and those with high HDL who do. Bottom line is extreme vaules at either end of the spectrum need evaluation by a lipid