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Cord Venous Blood Gas
Test CodeCORDVBG
CPT Codes
82803
Includes
pH, pCO2, HCO3, pO2, BE
Preferred Specimen
Heparinized blood gas syringe
Minimum Volume
1 ml
Instructions
Avoid introducing air into syring as this may affect results.
Transport Container
Heparinized syringe
Transport Temperature
Room temperature or in slushed ice
Specimen Stability
30 minutes at room temperature, 1 hour in slushed ice
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted samples
Methodology
Potentiometric and Amperometric
Setup Schedule
Performed daily upon receipt
Report Available
Upon completion of analysis
Reference Range
pH= 7.20 - 7.44
pCO2= 30.4 - 37.2 mmHg
HCO3= 20 - 28 mmol/L
pO2= 14.1 - 43.4 mmHg
BE= -6 to 2
Clinical Significance
Cord gases are drawn from the umbilical cord during delivery to determine the oxygenation of newborns blood. The venous blood reflects the maternal-acid base status and placental function.