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