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Epic Test Code LAB55 Carbon Dioxide: Serum

Performing Location(s)

BMC,CRH,LFH,HRK,OCH,FTT,FOX,FCC

Specimen Type

Serum or Plasma

Preferred Container

Gold or Red top tube

Alternate Container

Green top

Blood Tube Draw Volume

Min 50% draw volume  

Minimum Volume to Submit for Testing

0.5 mL Serum or Plasma

  • Multiple test can be performed from this volume. For question please contact the lab at 547-3975.  

Storage Requirements

Sample tubes should be centrifuged within 2 hours of collection 

Gold tops  DO NOT ALIQUOT

Aliquot Red tops after centrifuging 

See Causes of Rejection for temperature requirements.

Transportation Needs

 Deliver specimen to laboratory within 1 hour of collection if unspun. If not possible see "storage Requirements". 

Causes for Rejection

Mislabeled or unlabeled specimen

Less than 50% draw for Vacutainer tubes

 > 24 hours refrigerated 
> 24 hours room temperature
No Add-ons

Hemolysis > 500 mg/dL HgB
Lipemia > 1000 mg/dL Trig
Bilirubin > 40 mg/dL Bili

Reference Values

Population Units Reference Range High Critical Value Low Critical Value
All Populations mmol/L 21-31 >45 <10

 

Available STAT

Yes

Days of Analysis

All

Additional Information

Additional Information:

Total carbon dioxide concentration may be lowered by as much as 6 mmol/L when uncapped specimens are exposed to the air for one hour

Underfilling of vacuatiners may account for low total carbon dioxide results of up to 3 mmol/L

Methodology

Beckman AU/Dx Series

CPT Code

82374

Last Updated

27-NOV-24 MS