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HelpTest Code CO Carboxyhemoglobin, Blood
Methodology
Spectrophotometric Wavelength
Performing Laboratory
Munson Healthcare Laboratories
Specimen Requirements
Container/Tube: Unspun green-top (lithium heparin) gel tube, or blood gas (lithium heparinized) syringe
Specimen Volume: 0.5 mL (lithium) heparinized whole blood
Transport Temperature: Refrigerate
Collection Instructions: Do not open tube. Do not centrifuge. Do not collect with sodium heparin.
Reference Values
<2.0%
2.0-5.0% (smokers)
5.0-9.0% (heavy smokers)
Critical value (automatic call-back): ≥ 15%
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82375