Utility of Non-invasive Carboxyhemoglobin and Total Hemoglobin Measurement in the Emergency Department

The purpose of this study is to determine the clinical utility of triage screening for anemia and carbon monoxide poisoning (COP) in the ED setting.This is a prospective, nonrandomized, multi-center study of the performance of simultaneous non-invasive testing for two common disorders (COP and anemia). We will determine the limits of agreement and performance characteristics of non-invasive carboxyhemoglobin (SpCO) and hemoglobin (SpHb) values compared to standard blood tests for measurement of carboxyhemoglobin and hemoglobin, in the emergency department setting.