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CARBON DIOXIDE (TOTAL), Serum (087-0462)

Synonyms: CO2, TCO2, ECO2

CPT 4 Code: 82374

Test Order Mnemonic: TCO2

Lab: Clinical Chemistry

Request Form: Routine Chemistry Form 1

Collection: Routine venipuncture

Storage Instructions: Centrifuge the specimen to separate serum from red cells within 2 hours of collection. Store refrigerated at 2 - 8°C.

Causes for Rejection: Gross hemolysis

Availability: Samples are received 24 hrs per day at Sample Management, Room 5.136 McCullough.

Turnaround Time: Routine: 4 hours; STAT: 1 hour.

Specimen: Blood

Volume: 7 mL blood

Minimum Volume: 0.5 mL serum

Container: SST (gel barrier) or red-topped tube

Reference Ranges:    Newborn - 15 days: 13-22 mmol/L
                                       15 days - 15 years: 20-28 mmol/L
                                       15 years - adult:      24-31 mmol/L

Significant Values: <10 mmol/L or > 40 mmol/L

Test Method: Enzymatic Multi Point Rate

Reviewed/revised April 2007 by P. Harris 

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