Blood samples (10 cc. total) are to be collected in non-heparinized tubes upon initial presentation to the ED as well as 3-6hours and 24(+/-3) hours after the initial blood draw. The 3-6hour and 24-hour blood draw will be optional depending on patient location and the availability of study personnel. The plasma samples will be aliquoted and frozen at -70°C for later assays. These samples will be assayed for plasma FFA, plasma glucose, plasma insulin, and future cytokines including IL-1 and TNF.