CPT/HCPCS
82375
Order Code
CH708
Turnaround Time
24-48 hours
Test Includes
Carboxyhemoglobin/Hemoglobin.total
Specimen Requirements
Specimen Source
Whole blood
Transport Container
(Specimen Container)
(Specimen Container)
EDTA (lavender-top) tube Alternative Specimen(s): Whole blood collected in Sodium heparin (green-top) tube or lithium heparin (green-top) tube
Preferred Specimens
Whole blood collected in 1 full EDTA (lavender-top) tube
Minimum Volume (uL)
0.5 mL from full EDTA tube
Collection Instructions
(Transport Temperature)
(Transport Temperature)
Transport at Room Temperature
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | 5 days |
| Refrigerated | 10 days |
| Frozen | Unacceptable |
Reject Criteria
Fluoride oxalate (gray-top) tube
Grossly clotted
Special Instructions
Keep tube closed
Test Details
Methodology
Spectrophotometry (SP)
Clinical Significance
Carbon monoxide is the most common of the gaseous poisons. Malfunctioning or poorly ventilated heating appliances and internal combustion engines are frequent causes of carbon monoxide poisoning. Carbon monoxide combines reversibly with hemoglobin in a manner almost identical to oxygen resulting in a decrease in the amount of oxygen carried by hemoglobin. Accidental poisoning can occur even at low levels (greater than 0.01%) of CO in the atmosphere with prolonged exposure.
Reference Ranges
See Laboratory Report
