Blood Gases, Arterial | OHSU

Lab Services

Lab Services

Orderable EAP code:

LAB00068

Billable EAP Codes:

80001723 x 1

CPT Codes:

82805 x 1

Lab Section:

Core Lab

Includes:

pH, pC02, p02, HC03, Total C02

Turnaround Time:

Routine: 30 minutes
Urgent: 30 minutes
Extreme Emergency: 15 minutes

Test Schedule:

24 hours, 7 days a week.

Specimen Requirements:

1 mL blood in an arterial heparinized syringe.

Stability: Whole blood up to 30 minutes at room temperature, and up to 1 hour on ice.

Pediatric Specimen Requirements:

0.3 mL in a 1 mL heparinized syringe. Deliver to lab immediately.

Reference Range:

	Reference Range	Critical Limits
PH:
0 to 2 months	7.30 to 7.50	Less than or equal to 7.10
Over 2 months	7.37 to 7.44

PCO₂:
0 to 2 months	30 to 65 mmHg
Over 2 months	32 to 43 mmHg

PO2:
0 to 2 months	50 to 75 mmhg
2 months to 40 years	83 to 108 mmhg
Over 40 years	72 to 104 mmHg

HC0₃:
No age limit	21 to 28 mmol/L

Total CO2:
No age limit	22 to 28 mmol/L

PaO2/FIO2Ratio:
No age limit	Greater than 300 mmhg

Base Excess:
No age limit	-2 to 2

O2Sat:
0 to 1 month	40 to 90%

Comments:

Deliver to lab immediately. For manual transport deliver on ice.

Synonyms:

ABG
CO2 Total, whole blood
Carbon Dioxide, whole blood
pCO2
pO2