150 to 200 mg/dl are the reference or normal level of cholesterol in fasting blood and with increasing age it is up to 250.

If the blood is not fasting one, the cholesterol is wrongly elevated because the cholesterol from your meals is also estimated along with your blood cholesterol.

Today, the modern blood chemistry analysers need only 3 or 5 micro litres for this estimation, fasting blood serum is clear and non-fasting blood serum is turbid because of fat from the recent meals, which can disturb the measurements to give wrong values. If somebody says, it is not necessary to have the fasting blood; it is only a business without any moral.

Cholesterol is very important for our body.