Heart disease is the number one killer in the United States and high cholesterol levels are the driving force behind this deadly disease. It is important that you know your numbers so that if they are off balance, you can make the necessary lifestyle changes to bring your levels to a normal level. A cholesterol test shows you what your good cholesterol and bad cholesterol are, and some tests will also give you your triglyceride levels. It is important to know all three numbers because they have to be in balance for optimal cardiovascular health. A cholesterol meter helps you to keep an eye on your cholesterol levels so that if you notice your bad cholesterol or triglyceride levels inching up, or your good cholesterol level inching down, you can make the changes necessary to stabilize everything. Search the large inventory of different cholesterol products available on eBay from reliable sellers to find the items and devices that will best help you to keep your cholesterol in check.