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Preparing for your appointment
By Mayo Clinic staffTo check your cholesterol levels, you'll need to have blood drawn after you've been fasting. Usually, you'll need to go without eating or drinking anything but water for nine to 12 hours before your blood draw. Because of this, it's likely your doctor will recommend you have your blood drawn early in the morning.
At your appointment, your doctor may ask if you have a family history of high cholesterol or heart disease, since high cholesterol levels can be hereditary. Have this information ready, along with any other questions you might have.
