A normal range for LDL cholesterol lies between 70 and 129 milligrams per deciliter of blood, according to Mayo Clinic. Patients with a high risk of heart disease must aim to keep their LDL level near 70.
LDL and HDL are two types of cholesterol that increase or decrease a patient's risk of developing heart disease, according to Mayo Clinic. These acronyms stand for low- and high-density lipoprotein, respectively. LDL cholesterol is known as bad cholesterol because of its ability to stick to the inside walls of blood vessels, according to WebMD. For this reason high levels of LDL cholesterol are linked to heart disease.