pH, O2, HCO3, pO2, pCO2, Base Excess (BE)
Specimen Collection Requirements
Venous Whole Blood, one heparinized blood gas syringe
Collect anaerobically. Blood gas syringe should be capped with no air space.
Refrigerated (2-8°C), transport immediately
Specimens with syringe uncapped or with airspace. Specimens collected in tubes with benzalkonium heparin, EDTA, citrate, oxalate and fluoride.
Ambient (20-25°C): 30 minutes; Refrigerated (2-8°C): 30 minutes; Frozen (at or below -20°C): Unacceptable
Ion selective electrode (ISE), Co-oximetry, Colorimetry
Samaritan Health Services Laboratories
pO2: 25-43 mmHg
pCO2: 39-54 mmHg
O2 Sat: 60-85%
HCO3: 22-26 mmol/L
BE: -3 to 3
Age adjusted ranges.
pH: <7.22; >7.59
pCO2: <11 mmHg; >69 mmHg
Thursday, January 5, 2017 03:41:58 AM