High cholesterol is a risk factor for coronary heart disease in adults, but some children may be at risk for premature coronary heart disease if they have high cholesterol levels earlier in life.
http://www.emedicinehealth.com/cholesterol_and_children/article_em.htm
Children who should be tested at age 2 or older include those who have any of these conditions: http://www.healthgoods.com/Education/Nutrition_Information/Cholesterol/cholesterol_children.htm
Are they at risk, too, or are things different for children?
http://www.healthatoz.com/