The study ia aiming to the assessment of Mid-Regional proadrenomedullin (MR-proADM) as a novel biomarker that can provide accurate short-, mid- and long term prognostic information in the triage and multi-dimensional risk assessment of patients in the Emergency Department (ED). A clinical algorithm with predefined MR-proADM cut-off values: <0.75 nmol/L (low risk), 0.75 nmol/L≥ and ≤ 1.5 nmol/L (intermediate risk); >1.5 nmol/L is pre-defined. Based on these cut-off values, a prespecified algorithm aiming to predict i) reduction of hospitalization in the ward/ICU and increase of out-patient treatment (rule-out of risk); and ii) reduce adverse complications (identify patients at risk) will be applied and compared with the initial clinical decision.