Home
HelpTest Code CO2 Bicarbonate
Useful For
Carbon dioxide measurements are used in the diagnosis and treatment of numerous potentially serious disorders associated with changes in body acid-base balance.
Synonyms/Keywords
HCO3, CO2, Total CO2
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 | Plasma/Serum | Lithium-heparin Plasma Separator (PST), Serum Separator Tube (SST) | Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT) | 1 mL | 0.3 mL | 0.6 mL whole blood |
Collection/Processing Instructions
Full, unopened tube is preferred.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Ambient | 24 hours |
| Refrigerate | 1 week | |
| Frozen | 3 months |
Rejection Criteria
| Samples collected with potassium oxalate/sodium fluoride. |
|---|
| Specimens on cells |
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| Marshfield | 0-2 months: 14-27 mmol/L ≥ 2 months: 21-33 mmol/L |
| See Critical Value List for list of current critical values | |
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Beaver Dam | Monday thrue Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Chippewa Falls | Monday through Friday | Less than 2 hours | ISE Assay/Beckman AU |
| Weston | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Eau Claire | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Park Falls | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Ladysmith | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Rice Lake | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Marshfield | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Minocqua | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Neillsville | Monday through Sunday | Less than 2 hours | ISE Assay/Beckman AU |
| Stevens Point | Monday through Friday | Less than 2 hours | ISE Assay/Beckman AU |
| Wisconsin Rapids | Monday through Friday | Less than 2 hours | ISE/Siemens Dimension |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82374 | 1 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82374 | 1 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Bicarbonate Level |