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Carbon Dioxide, Total
| Item | Value | ||||
|---|---|---|---|---|---|
| Approval req'd? | No | ||||
| Available Stat? | Yes | ||||
| Test code | CO2 | ||||
| Performed by | Parnassus & Mt. Zion Chemistry | ||||
| In House Availability | Test available 24 hours per day 7 days per week | ||||
| Method | pH electrode, using bicarbonate and sample CO2 | ||||
| Container type | Gold top or Light Green top | ||||
| Amount to Collect | 1 mL blood Click here for Microdetermination info | ||||
| Sample type | Serum or plasma | ||||
| Preferred volume | 0.5 mL serum or plasma | ||||
| Min. Volume | 0.2 mL serum or plasma Click here for Microdetermination info | ||||
| Units | mmol/L | ||||
| Normal range |
1. Normal range for 0 to 15 year old children adapted from Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345 2. Normal range for >18y adults was determined by testing 271 male and female healthy blood donors at UCSF. Adult range adapted for children 16-18 years |
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| Critical value | < 15 mmol/L or > 40 mmol/L | ||||
| Synonyms | CO2; Anion gap | ||||
| Stability | Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week | ||||
| Turn around times | STAT 1 hour, Routine 4 hours | ||||
| Additional information | The anion gap is calculated from the serum Sodium, Chloride and Total CO2 values using the equation: Na-(CL+CO2). The calculation is automatic whenever all three of the electrolytes are ordered together. It is not a separately orderable test. Normal range for the Anion Gap is 4-14. | ||||
| LOINC code | 2028-9 | ||||
| Last Updated | 2/17/2012 9:56:59 AM | ||||
| Entry Number | 167 | ||||
| Lab Procedure Link | Click here for Procedure |
If you have additional questions regarding this test, please call: 415-353-1667