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Test Code LABGASCA Arterial Blood Gas, Umbilical Cord

Synonym

  • GASCA

Profile Information

Reporting Name Available Separately Always Reported
pH, Arterial Cord Blood No Yes
pCO2, Arterial Cord Blood No Yes
pO2, Arterial Cord Blood No Yes
HCO3, Arterial Cord Blood No Yes
sO2, Arterial Cord Blood No Yes
Base Excess, Arterial Cord Blood No Yes

Specimen Required

Preferred Container/Tube: Dry Lithium Heparin Syringe
Acceptable Container/Tube: Dry Lithium Heparin Syringe
Specimen Volume: Full syringe
Specimen Minimum Volume: 1 mL

Specimen Stability Information

Ambient: 30 minutes
Refrigerated: 30 minutes

Frozen: unacceptable

Rejected Due To

  • Unacceptable container type
  • Quantity not sufficient
  • Clotted specimens
  • Received >30 minutes from collection time

Reference Values

pH, Arterial Cord Blood
7.23-7.33

 

pCO2, Arterial Cord Blood
41-58 mm Hg

 

pO2, Arterial Cord Blood
12-24 mm Hg

 

HCO3, Arterial Cord Blood
20-25 mmol/L

 

sO2, Arterial Cord Blood
3-69 %

 

Base Excess, Arterial Cord Blood
-3.0-3.0 mmol/L

Method Description

pO2: Amperometry

pH, pCO2: Potentiometry

Base excess: HCO3- - 24.8 + 16.2 x (pH - 7.4)

HCO3: Log (HCO₃ (c)) =   pH + log(pCO₂) – 7.608 mmol/L

sO2: Oximetry

Performing Lab

Clinical Lab UH

Day(s) Performed

Monday through Sunday

Reporting Name

Arterial Blood Gas, Umbilical Cord

CPT Code Information

82805

LOINC Code Information

28646-8
28644-3
28648-4
1959-6
2713-6
11555-0