Cholesterol is a substance that travels through your bloodstream as waxy, fat-like lipoproteins. There are two types of cholesterol: High-density lipoprotein (HDL), which is good for your health, and low-density lipoprotein (LDL), too much of which is bad for your health.
Your body uses cholesterol to create hormones and vitamins. Your body naturally creates cholesterol, but you can also get it — both HDL and LDL — from certain foods.
These foods can include:
- eggs
- full-fat dairy, such as cheese
- seafood, such as prawns
According to the Centers for Disease Control and Prevention (CDC), between 2009 and 2016, around 1 in 5 teenagers in the United States had unhealthy cholesterol measurements. There are no noticeable symptoms of high cholesterol. You will likely be unaware you have it unless you get a test done.
Cholesterol tests work by measuring the amount of cholesterol in your bloodstream in milligrams per deciliter of blood (mg/dL).
Tests that medical professionals carry out measure the different types of cholesterol:
- HDL cholesterol: This kind of cholesterol helps remove LDL cholesterol from the bloodstream. This kind isn’t harmful to your health. One 2017 study notes that higher HDL cholesterol levels are associated with better outcomes in patients with coronary heart disease.
- LDL cholesterol: LDL cholesterol has certain health risks. Excess LDL can cause cholesterol to build up on the walls of your arteries. This can increase the risk of heart attacks or strokes.
- Triglycerides: These are the molecules produced when your body breaks down fats from food. Excess triglycerides can increase the risk of cardiovascular disease. Drinking excessive alcohol or eating a high calorie diet can increase the amounts of triglycerides in the bloodstream.
Some at-home cholesterol tests measure total cholesterol. This includes HDL, LDL, and 20% of triglyceride measurement. This varies between providers, along with the accuracy of these tests. Some at-home tests send samples to labs for analysis, and in some, you place the test strip into a machine at home.
At-home tests vs. other tests: What are the differences?

Typically, at-home cholesterol tests provide results that are as accurate as the tests healthcare professionals use. Still, the cholesterol tests that healthcare professionals use provide more details. These details are important for determining the actual state of your cardiovascular health.
Most cholesterol tests involve taking blood via a finger prick and analyzing the cholesterol levels in it.
At-home tests measure only your total cholesterol. This is the total amount of cholesterol in your bloodstream, regardless of the type. This means that these tests can generate results faster.
The tests that professionals use include a lipid profile. According to the Centers for Disease Control and Prevention (CDC), they measure:
- LDL
- HDL
- triglycerides
- total cholesterol
At-home tests do not measure these different types of cholesterol. This means that the results you receive from at-home tests are unable to tell you whether you are at risk of a cardiovascular problem, or whether you need to address or change your lifestyle.