The purpose of this study is to determine whether lipoprotein(a), also called Lp(a), is a risk factor for cardiovascular (heart) disease. Lipoproteins are tiny particles that circulate in the blood. They contain cholesterol, fat, and protein in varying amounts depending on the body's need. Higher levels of lipoproteins in the blood can cause an increased risk of heart disease.

The investigators believe that by studying the Lp(a) lipoprotein in Caucasians and African Americans, the investigators can assess for genetic variation factors related to cardiovascular (heart) disease. The investigators will be looking at 100 African-American families and 100 Caucasian families to confirm whether a higher Lp(a) level is an indicator of a higher risk for heart disease.

During the study visit the research staff will ask about the medical history, perform a brief physical exam, and draw approximately 4 teaspoons of blood of each family member.

Inclusion Criteria:

• Of Caucasian or African descent
• Families must have 2 natural/biological parents and 2 natural/biological offspring
• 6 years old or older

Exclusion Criteria:

• Races other than African American or Caucasian
• Families without 2 natural/biological parents and 2 natural/biological offspring
• younger that 6 years old

We are recruiting 100 African American and 100 Caucasian families. The families that will be recruited will have two natural parents and two natural offspring.