High Cholesterol: Diagnosis

Reviewed by Andrew M. Freeman, MD, FACC, FACP
High blood cholesterol is diagnosed by a blood test called a lipoprotein profile.

This requires fasting, so you cannot eat or drink anything for 9 to 12 hours before taking the test.

The lipoprotein profile provides information about:

  • Total cholesterol

  • Low-density lipoprotein (LDL) level or bad cholesterol

  • High-density lipoprotein (HDL) level or good cholesterol

  • Triglycerides

If it is not possible to get a lipoprotein profile done, knowing your total cholesterol and HDL cholesterol can give you a general idea about your cholesterol levels.

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