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Test Code LAB4032 VENOUS BLOOD GASES

Important Note

Do not place on ice if it will be analyzed within 30minutes. Do not expose sample to air.

Specimen Type

Preferred Specimen: Heparinized Syringe 

Specimen Volume

1 mL

Minimum Volume

0.3 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Room Temp: 30 min
On Wet Ice: 1 Hour 

Specimen Processing

Do not place specimen on ice if it will be analyzed within 30 minutes. If specimen cannot be analyzed within 30 minutes,store and transport on ice water.

Method

Ion Transfer Electrode/Potentiometry/Co-oximeter

Reference Ranges

pH            7.31-7.41

 pCO2      41-51 mmHG

p02             33-47 mmHG

02 Saturation, Venous 70-76 %

HC03                       22-26 mm/L

TCO2                       23-33 mm/L

Base Excess        -2.0 to +2.0 mm/L

Test Components

pH; pCO2, mmHG; pO2, mmHG; O2 Saturation, Venous, %; HCO3, mmol/L; TCO2, mmol/L; Base Excess, mmol/L.

CPT Codes

82803

Rejection Criteria

Specimen exposed to air or not kept on ice after 30 minutes. Specimen collected in vacutainer tube.