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CO2, total-73

Test info

Test name:

CO2, total

Test number:

Excellian order number:

82374.1

Abbreviation:

CO2

Alternate names:

Bicarbonate

Specimen

Specimen type:

Lithium heparin (Li hep) plasma

Collection container:

Lt green plasma separator (PST)

Volume:

1.0 mL

Minimum volume:

0.3 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

Processing instructions:

Spin within two (2) hours of sample collection

Transport container:

Lt green plasma separator (PST)

Alternate specimen type:

Serum

Alternate collection container:

Gold serum separator (SST) tube

Alternate collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Alternate processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Alternate transport container:

Gold serum separator (SST) tube

Transport and stability:

Refrigerated - 7 days

Ambient - 40 hours

Frozen - 6 months

Keep tube tightly capped for storage. A consequent decrease in the CO2 value of up to 4 mmol/L can occur in the course of an hour once the specimen has been exposed to ambient air.

Reason for rejection:

Improper labels (unlabeled or mislabeled)
Hemolysis (some procedures)
Improper anticoagulant or ratio
Delay in transport
Improper storage temperature affecting results
Improper container
Leaking container resulting in compromised specimen
Quantity not sufficient (QNS)

Performance

Performing lab:

AHL - Chemistry: C

Days set up:

Daily

TAT:

1 day

Method:

Enzymatic

Clinical and Interpretive info

Reference ranges:

22 - 29 mmol/L

Results that require action (critical):

Low: <10 mmol/L

High: >40 mmol/L

Billing

CPT codes:

82374

Tracking

Date created:

11/30/2001

Revised date:

12/22/2022

Review date:

01/04/2024