Evaluation of MDW for Early Detection of Sepsis, Clinical Validity

To confirm the clinical validity and performance of the Monocyte Width Distribution (MDW) parameter to detect the development of sepsis in a prospective study of ED adults who have blood draw including CBC with Differential ordered upon ED presentation. Septic patients are identified as those with values equal to or above the MDW threshold and non-septic patients are those with MDW values below the threshold. As the anticoagulant used at the sites is K3EDTA, the cut-off value will be assessed using sepsis cases and all corresponding non-sepsis to confirm optimal cut-off. To explore the added value of this parameter in a patient diagnostic pathway that includes the use of procalcitonin (PCT) or C reactive protein (CRP) for the identification of septic patients All enrolled subjects will have PCT/ CRP assay performed per protocol Plasma will be aliquot and stored frozen for subsequent testing at Beckman Coulter for other sepsis biomarker tests (additional PCT\& CRP tests and interleukin-6 (IL-6) on the sponsor's devices