Carboxyhaemoglobin
Code:
CARHB
Sample Type:
Blood Gas (Arterial Blood in Heparinised Syringe) or Lithium Heparin Whole blood (Green Top)
Minimum volume: 1 mL
Ref Ranges/Units:
0 – 5%
Turnaround:
Within 30 minutes of receipt.
Special Precautions/Comments:
Additional Information:
Carboxyhaemoglobin (COHb) is formed when carbon monoxide (CO) irreversibly binds to haemoglobin. It is measured by co-oximetry in the investigation of CO poisoning, such as in cases of smoke inhalation. Carboxyhaemoglobin can also be increased in smokers (up to 9%).
South of Tyne & Wear Pathology Centre
