Brief Summary: Evaluation of skin cholesterol for cardiovascular risk assessment in asymptomatic individuals at low intermediate or high risk based on Framingham Global Risk estimates Carotid intima-media thickness IMT a surrogate marker for atherosclerotic burden that independently predicts the occurrence of heart attack and stroke will be the gold standard comparator
Hypothesis Skin cholesterol as measured by two non-invasive tests correlates with CAD as measured by CIMT in this population
Detailed Description: This study will enroll 600 asymptomatic subjects at low 6 intermediate 6-20 or high 20 10-year Framingham global cardiovascular risk in approximately equal proportions
Subjects will be enrolled from each of the three risk levels at each study site 6 total in the US Subjects will be enrolled in a consecutive manner until there are 200 subjects from each risk level We will track the number of subjects from each risk stratum We will also ensure adequate representation of women at least 33 and African Americans at least 25in the study
We will test the subjects with 2 non-invasive skin cholesterol tests and will take a sample of blood that will be tested for serum cholesterol values and other markers of CAD Subjects will also undego a carotid IMT scan
The primary objective of the study is to see if skin cholesterol correlates with CAD as measured by CIMT