Cholesterol level charts by age contain cholesterol level guidelines for either adults or children and teens. There are different charts for these two populations because desirable triglyceride and cholesterol levels are different for children and teens than those for adults, notes emedicinehealth.
People over 20 years of age should have their cholesterol levels measured at least every five years, according to WebMD. This is done through a lipid profile, which is a blood test.
The presence of risk factors for heart problems may cause a doctor to revise goals for a particular patient's cholesterol levels. One of these factors is age-related, as men over 45 years old and woman over 55 have a higher risk for heart disease, says emedicinehealth.