According to the American Heart Association, the results of a cholesterol test are reported in mg/dL. As of 2014, guidelines for desirable cholesterol levels include a total cholesterol of less than 200 mg/dL, LDL cholesterol less than 100 mg/dL and triglycerides less than 150 mg/dL. HDL is known as good cholesterol, and the Mayo Clinic states that a level of 50 mg/dL or greater is considered acceptable and 60 mg/dL or more is considered the best. A person's physician is ultimately responsible for interpreting the results based on the person's age, family history, smoking history and blood pressure levels. A treatment plan may be proposed if the cholesterol levels are abnormal.