Tests:Caboxyhaemoglobin, Blood: Difference between revisions

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Tests:Caboxyhaemoglobin, Blood
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FCOHb   
FCOHb   
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|Test Availability
|Availability
|Monday - Sunday, testing routinely available out of hours  
|Monday - Sunday, testing routinely available out of hours  
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== Specimen Requirements ==
== Specimen Requirements ==
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|-
|Specimen Type
|Specimen  
|Whole blood
|Whole blood
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|Specimen Transportation
|Blood gas syringes must be transported immediately and processed within 30 minutes. 
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|Preferred  
|Preferred  
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Serum
Serum
Plasma
Plasma
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|Specimen Transportation
|Blood gas syringes must be transported immediately and processed within 30 minutes. 
|-
|-
|Paediatric Requirements
|Paediatric Requirements
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== Aliquot Requirements ==
== Aliquot Requirements ==
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|Sample Type
|Sample  
|heparinised blood - DO NOT OPEN. 
|heparinised blood - DO NOT OPEN. 
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Do not open the tube.
Do not open the tube.
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Latest revision as of 20:42, 14 September 2026


Overview

Department Biochemistry 
Test Code
Synonyms CoHb

Carbon Monoxide

FCOHb 

Availability Monday - Sunday, testing routinely available out of hours
Turnaround Time 30min - 1 hour 
Stability - Test add Samples collected into a full Green top tube are stable for several days

Specimen Requirements

Specimen Whole blood
Preferred Minimum 1 mL in blood gas syringe
Acceptable Full 4 mL Green-Top tube collected anaerobically, Mix well
Unacceptable Clotted blood

Serum Plasma

Specimen Transportation Blood gas syringes must be transported immediately and processed within 30 minutes. 
Paediatric Requirements 0.2 mL in blood gas capillary  

Aliquot Requirements

Sample heparinised blood - DO NOT OPEN. 
Preferred Volume 4 mL
Minimum Volume
Aliquot Transportation

Clinical Information

Reference Intervals Non-smokers: <1.5%

Smokers: <9% 

Test Method Co-oximetry on Radiometer ABL90 FLEX blood gas analyser 
Advanced Notice Not required  
Patient Preparation Not required  

Comments

Heparin tube of blood must be as full as possible.

Do not open the tube.

Owner Clair Crossley (Crossley1)
Last reviewed 14.09.2026
Next review 14.09.2027 (OK)