Screening In Anticipation of Future Research

This is a blood test screening protocol to test for the human immunodeficiency virus (HIV), Hepatitis B (HBV), and Hepatitis C (HCV) infection in anticipation of future research on the blood through the Yale Liver Center Patient Registry and Serum/Tissue Bank. The tests are required because the researchers need to know that the samples are safe to handle and because these viruses can change how the cells in your blood work and they may then not be truly representative of the cells that researchers are studying.