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

A Multi-Center Study on the Utility of Non-invasive Carboxyhemoglobin and Total Hemoglobin Measurement in Emergency Department Patients

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.

Inclusion Criteria:

• Age 1 year or older.
• At least one digit has acceptable width as measured by study-provided digit gauge.
• Presenting to emergency department for any complaint.
• Potential for IV catheter and/or blood draw for CBC as standard of care.

Exclusion Criteria:

• Patients unable to consent for any reason
• Patients with fingernail polish, discoloration or trauma to fingers