When I get my annual physical, I always have blood work done, too. I have often wondered at the various breakdowns of cholesterol. Herewith, an explanation from the Harvard Medical School.
Q. My recent cholesterol test result included “non-HDL cholesterol.” What is the significance of this number?
A. Your non-HDL cholesterol result refers to your total cholesterol value minus your HDL cholesterol. When you get your blood drawn for a cholesterol test (also known as a lipid profile or lipid panel), the report usually includes four numbers: low-density lipoprotein (LDL) cholesterol; high-density lipoprotein (HDL) cholesterol; triglycerides; and total cholesterol.
Although you might assume total cholesterol is simply the sum of your LDL and HDL, it also includes very-low-density lipoprotein (VLDL). These particles carry triglycerides to tissues and eventually become LDL. Like LDL, it also causes cholesterol to build up on the inside of arteries, creating artery-clogging plaque. Both are considered undesirable, so the higher your LDL and VLDL values, the higher your risk of heart disease. Continue reading
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