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HelpTest Code LAB4142 METHEMOGLOBIN (METHB), ARTERIAL
Specimen Type
Arterial Whole blood
Collection Instructions
Expel excess air from syringe and tightly cap, place sample in an ice slurry, and analyze immediately after collection (within 30 minutes).
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. Store and transport on wet ice.
Method
Colorimetric/Co-oximeter
Reference Ranges
Methoglobin 0.0-2.0 %/tHgb
Synonyms
MetHb
Test Components
Hemoglobin, g/dL; CO, %; Methemoglobin, %.
CPT Codes
83050