High Cholesterol: Diagnosis

Reviewed by Andrew M. Freeman,
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.

Clinical Trials

For more than 100 years, National Jewish Health has been committed to finding new treatments and cures for diseases. Search our clinical trials.