Carboxyhaemaglobin

Pathology category

Biochemistry

Code

COHB

Referral code

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Test information

To assess presence of Carbon Monoxide in blood. Usually measured along with blood gases, but in cases of suspected exposure, then can be measured on venous sample. It can be fairly rapidly eliminated from the patient so requires prompt analysis on the nearest blood gas analyser.

Please note: This test is not UKAS accredited. Quality control procedures are in place to verify the quality of results and are reviewed by a qualified Biomedical Scientist.

Guidelines

Pre-analytical

To be received in laboratory as soon as possible

Reference range

Non smokers Up to 3% Smokers 10 to 15%

Tube type

Tube type info

Lithium heparin

Special requirements

Whole blood – tube must be filled

Minimum volume

Assay frequency

TAT Inpatient (urgent)

TAT Inpatient

POCT - Blood gas analyser (ED & IP)

TAT GP/Outpatient

7 days

Referral lab

Local, Clinical Biochemistry