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HelpTest Code LAB4047 CARBOXYHEMOGLOBIN, ARTERIAL
Specimen Type
Sodium or lithium heparinized whole blood (green top tube)
Specimen Volume
5 mL
Minimum Volume
0.1 mL
Turnaround Time
STAT: 30 minutes
Routine: 1 hour
Test Schedule
Daily
Sample Stability
Whole blood: 1 hour on ice
Method
Colorimetric/Co-oximeter
Reference Ranges
COHb: 0.0-1.5 %/tHgb
Synonyms
Carboxyhemoglobin; COHB; CO HGB; Carbon Monoxide
CPT Codes
82375
Test Components
Hemoglobin, g/dL; Carboxyhemoglobin, %
Specimen Processing
Do not remove stopper. Do not centrifuge. Put tube on wet ice immediately and transport without delay.
Collection Instructions
Fill tube completely. Put on wet ice immediately.
Rejection Criteria
Specimen that has been at room temperature longer than 30 minutes, been opened, recapped, or spun.