Test Background Carboxyhaemoglobin forms following exposure to carbon monoxide. Carbon monoxide binds much more avidly to haemoglobin than oxygen.
Clinical Indications Determine whether high COHb levels are present decreasing oxygen availability to tissues
< 1.5 % in non smokersConcentrations in smokers are higher.
Sample Container Preferably a blood gas syringe. If not, a lithium heparin
Sample Volume Gas syringe 0.5 mL, Lithium Heparin tube 4 mL
Turnaround Time Run daily