What is measured
- LDL cholesterol — often called "bad" cholesterol, because high levels can build up in the walls of blood vessels.
- HDL cholesterol — often called "good" cholesterol, because it helps carry cholesterol away.
- Triglycerides — another type of fat in the blood.
- Total cholesterol.
Preparing for the test
Some lipid tests are done after fasting and some are not. Follow the instructions of the clinician or laboratory that booked your test.
Reading the result
Cholesterol is one part of heart-health risk. Clinicians look at it together with blood pressure, blood sugar, smoking, family history, age and other factors before suggesting any change. See heart health: the risk factors you can change.
Sources
- Cholesterol Levels — MedlinePlus — U.S. National Library of Medicine. Checked 2026-09-26.
Editorial update: 2026-09-26.
Medical disclaimer: this is a source-linked educational summary, not individual medical advice, diagnosis, prescription or interpretation of personal results. For severe or rapidly worsening symptoms, call 115.
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