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HelpTest Code CO2 Carbon Dioxide (CO2)
Additional Codes
| EPIC | LAB4057 |
Clinical Significance
Carbon Dioxide measurements are used in the diagnosis and treatment of numerous potentially serious disorders associated with changes in body acid-base balance.
Source: Beckman Coulter Unicel, CO2 IFU. REF #A18481AN 12/22/15
Methodology
pH rate of change method utilizing a glass carbon dioxide electrode in conjunction with a glass pH reference electrode (Beckman Coulter UniCel DxC 660i)
Sample Type
| Preferred Sample Type | |
|---|---|
| Light green top - Plasma | |
| Acceptable Sample Type(s) | |
|---|---|
| Dark green top - Plasma | |
| Yellow top - Serum | |
| Red top - Serum | |
Centrifuge: Yes
Specimen Minimum Volume
0.5 mL
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (18-25°C) | 8 hours |
| Refrigerated (2-8°C) (store) | 48 hours |
| Frozen (-15 to -20°C) | 1 month |
Separate plasma or serum from cells within 2 hours.
Reference Ranges
| Normal Range | |
|---|---|
| >1 Month Old | 24 - 32 mmol/L |
| <1 Month Old | 18 - 27 mmol/L |
| Critical Values |
|---|
| <10 mmol/L |
| >40 mmol/L |
| Technical Range |
|---|
| 5.0 - 50.0 mmol/L |
Rejection Criteria
| Hemolysis | N/A |
|---|---|
| Icteric | N/A |
| Lipemia | 4+ ultracentrifuge |
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
Lab Department
Chemistry
CPT Code
82374
LOINC
2028-9 CO2 [Moles/Vol]