What is an elevated HDL level?

High is good. Hdl - high density lipoprotein cholesterol - healthy cholesterol. One would want the level to be at least 40 mg/dl in men and at least 50 mg/dl in women. There's no side effects with a high hdl, so higher is better. Values over 70 mg/dl are more protective against heart attacks.
A goood measure. Cholesterol levels are indirect measures of the different lipoproteins within our bodies. It is actually the lipoproteins that determine the degree of inflammation and atherosclerosis. Hdl cholesterol is a measure of the amount of cholesterol in the high density lipoproteins, or hdl. The higher that cholesterol fraction the higher the concentration of hdl. High density lipoproteins are protective.