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HelpTest Code CO Carbon Monoxide
Synonyms/Keywords
CO, Carboxyhemoglobin
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Whole Blood | Non-Gel barrier tube, either: Lithium-heparin Green Top Tube (GTT) or Sodium-heparin Green Top Tube (GTT) | Heparinized Syringe | 4 mL | 1 mL |
Collection/Processing Instructions
Avoid exposure of sample to atmosphere (beyond several minutes).
For pediatric samples, transfer of anticoagulated whole blood to a small polypropylene tube or microcollection tube filling the tube in its entirety (to minimize any air exchange) is acceptable.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood | Ambient | 12 hours |
| Refrigerate | 72 hours |
Rejection Criteria
| Collection tube that is not two-thirds full or if analysis delayed more than 72 hours |
| Samples collected in gel barrier tubes (PST) |
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| All Performing Sites |
- Non-smokers: ≤ 2.0% - Smokers: ≤ 9.0% - Symptomatic: 10 - 20% - Toxic: >20% |
| See Critical Value List for list of current critical values | |
Marshfield Labs Performing Department
Marshfield Labs Urinalysis
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Weston | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Radiometer |
| Eau Claire | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
| Park Falls | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
| Ladysmith | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
| Rice Lake | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
| Marshfield | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
| Minocqua | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
| Neillsville | Monday through Sunday | Less than 2 hours | Co-oximeter Multi-wavelength Spectrophotometry/Gem 4000 |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82375 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82375 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Carboxyhemoglobin Level |