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Test Code ABG Post oxygenator Arterial Blood Gas, POST oxygenator

Important Note

Place specimen in outside pocket of a pre-filled biohazard bag of ice, then put into a separate biohazard bag for transport.

Clinical System Name

Arterial Blood Gas, POST oxygenator


ABG Post oxygenator

ABG, POST oxygenator

Post oxygenator ABG

Sample Requirements

Specimen: Whole Blood

Container(s): Heparinized Syringe

Preferred Vol: 1.0 mL

Minimum Vol:  0.8 mL


Note:  Send to the lab immediately. Avoid air bubbles. Expel air from syringe and cap it immediately after obtaining the sample.  Ideally, whole blood specimens should be analyzed within 15 minutes of blood draw.


Processing Instructions

Reject due to: Inadequately filled specimens, air bubbles, visible clots, age of specimen

Spin: N

Aliquot: N

Temp: On ice.

Storage: Deliver to Core Lab Rapidpoint bench.


Off-site collection: Sample is not drawn by the Laboratory.  Samples must be collected at Children's.  Contact Laboratory (206) 987-2617 for additional information.



Specimen Type Temperature Time
Heparinized Syringe RT  ≤ 15 min.
Heparinized Syringe 0-4o C 30 min
Heparinized Syringe -20o C or -70oC No



STAT Performed TAT
Y 24/7 15 M


Performing Laboratory

Seattle Children's Laboratory    


Department:  Core Rapidpoint/Chemistry

Phone Number: 206-987-2617

Reference Range


  pH pCO2 (mm/Hg) pO2 (mm/Hg)

All Ages

7.35 - 7.45    
4 D- 1 M   26 - 40  
1 M-   18Y   35 - 45  
0 - 2 D     60 - 70
2 D- 18Y     80 - 100

All values are for arterial samples.


Method: Potentiometric method using standard ion-selective electrode (ISE) technology, Modified potentiometric method based on the principles of the Severinghaus electrode, Amperometric measurement based on the principles of the Clark electrode on Seimens RAPIDPOINT 500


Analytical Volume: 0.2 mL


CPT Codes


Critical Values

Age pH
All Ages


≥ 7.60



Age pCO2 (mmHg)
All Ages


≥ 70


Age pO2 (mmHg)
0- 2 D


2 D - ≥ 18 Y




Age HCO3 (mmol/L)
All Ages


≥ 40