All volunteers will sign a written consent, approved by the Institutional Review Board (IRB). The consent form will discuss the risks and benefits of our study. The benefit of our study is to identify a possible confounder to our current interpretation of serum lactates. By clarifying whether Lactated Ringer's fluid can contribute to measured serum lactate level we hope to improve our care to septic patients and those patients with abnormal vital signs and elevated serum lactate levels in whom the diagnosis of sepsis is being considered. The risks of this study include the possible development of fluid overload state and pulmonary edema. We believe these sequelae would be very unlikely to occur since we are excluding anyone with a history of any clinical conditions associated with fluid overload.