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HelpTest Code CARBHGB Carboxyhemoglobin (Carbon Monoxide)
Specimen Information
Obtain blood using standard phlebotomy techniques.
No special patient preparation is necessary.
| Container | Specimen | Temperature | Collect Vol | Submit Vol | Min Vol | Stability |
| Blood Gas Syringe | Whole Blood | Room Temp | 2.0 mL | 1.5 mL | 1.5 mL | 1-hour |
| Lithium Heparin | Whole Blood | Room Temp | 2.5 mL | 2.5 mL | 2.5 mL | 1-hour |
Reject Due To:
- Specimen received with needle attached
- Above conditions not met
- Clotted
- Specimen unlabeled or mislabeled
Instrumentation / Method
ITC AVOXimeter 4000 / Spectrophotometric
Reference Range
| Analyte | Reference Range | Critical Low | Critical High |
| Total Hemoglobin | Age Dependent | <7.0 g/dL | >23.0 g/dL |
| OxyHemoglobin | 94 - 100% | None | None |
| CarboxyHemoglobin | Non-Smoker: <5.0% | None | >9.0 % |
| MetHemoglobin | <1.5% | None | None |
Test Schedule /Analytical Time / Test Priority
Daily / Same Day / Available STAT
CPT / LOINC
| Analyte | CPT | LOINC |
| Total Hemoglobin | 85018 | 718-7 |
| CarboxyHemoglobin | 82375 | 2030-5 |
| MetHemoglobin | 83050 | 2614-6 |
| OxyHemoglobin | 82810 | 11559-2 |