Carboxyhemoglobin Quantitation, Whole Blood by Co-Oximetry
Use to diagnose increased carbon monoxide (CO) levels and CO poisoning.
New York DOH Approval Status
Green (sodium or lithium heparin). Do not collect by finger stick or heel stick.
Keep specimen anaerobic; do not remove cap from collection tube. Refrigerate within 30 minutes after collection. Transport 5 mL whole blood. (Min: 0.5 mL) Specimen should be received within 24 hours of collection.
Refrigerated. Separate specimens must be submitted when multiple tests are ordered.
Specimens collected in EDTA tubes or not anaerobically. Specimens that have been opened or exposed to room air. Frozen or room temperature specimens. Specimens containing air bubbles or clots.
Ambient: Unacceptable; Refrigerate: 72 hours; Frozen: Unacceptable
Effective February 21, 2011
Individuals who smoke typically demonstrate higher Carboxyhemoglobin values than non-smokers.
|1-2 packs per day||0-5.0 percent|
|3-4 packs per day||0-9.0 percent|
|Component Test Code*||Component Chart Name||LOINC|
- Carbon monoxide
- COHb concentration
- COHb levels
- COHb percent