Subjects enrolled (first sample collection) from ED or Floor admitted to the ICU within 24 hours of enrollment; Subjects enrolled from ICU admitted to the ICU within the 24 hours prior to enrollment; Expected to remain in the ICU for at least 48 hours after enrollment; Use of indwelling urinary catheter as standard care expected for at least 48 hours after enrollment; At least one of the following acute conditions within 24 hours prior to enrollment: