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HelpTest Code LAB9352 Blood Gas, Pulmonary Artery
Performing Laboratory
Barnes-Jewish Hospital Laboratory
Methodology
Amperometric and Potentiometric
Includes Base Excess, HCO3 (calculated), O2 Sat (measured), pCO2, pH, and pO2.
Literature References:
1. Reference manual: ABL 800 Series. Radiometer America, Bronshoj Denmark, 2009.
2. Scott MG, Klutts JS. Physiology and disorders of water electrolyte, and acid-base metabolism. In: Tietz textbook of clinical chemistry. 4th ed. Elsevier Saunders Co, 2005:1747-76.
Specimen Requirements
Hospital Patient:
Specimen Type: Whole blood, pulmonary arterial heparinized
Container/Tube: Sims-Portex blood gas syringe
Specimen Volume: Full tube
Additional Information:
1. Send capped syringe (no needle attached) to the laboratory.
2. Indicate O2 (FIO2) on label or request form.
3. High white cell count may falsely lower pH and pO2.
Non Hospital Patient:
Call Barnes-Jewish Hospital Laboratory Customer Service at 314-362-1470 prior to collection to schedule a STAT pick-up.
Specimen Type: Whole blood, pulmonary arterial heparinized
Container/Tube: Sims-Portex blood gas syringe
Specimen Volume: Full tube
Additional Information:
1. Send capped syringe (no needle attached) to the laboratory.
2. Indicate O2 (FIO2) on label or request form.
3. If sending by courier, place labeled syringe in a container with wet ice. Specimen must be received in the laboratory within 60 minutes of draw.
4. High white cell count may falsely lower pH and pO2.
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT: 15 minutes after receipt in laboratory
Routine: not available
Test Classification and CPT Coding
82803
Reference Values
BASE EXCESS
No Reference Range
O2 SATURATION (MEASURED)
No Reference Range
HCO3 CONTENT (CALCULATED)
No Reference Range
Critical result (automatic call-back): ≤10 mmol/L or ≥45 mmol/L
pCO2
No Reference Range
Critical result (automatic call-back): ≤ 15 mm Hg or ≥75 mm Hg
pH
No Reference Range
Critical result (automatic call-back): ≤7.20 or ≥7.60
pO2
No Reference Range
Critical result (automatic call-back): ≤25 mm Hg
Literature Reference:
Scott MG, Klutts JS. Electrolytes and blood gases. In: Tietz textbook of clinical chemistry. 4th ed. Elsevier Saunders Co., 2006;983-1018.
Specimen Transport Temperature
Refrigerate or Ambient <60 minutes OK
Additional Information
For BJH Laboratory Use Only
Analyte Stability:
See Analyte Stability Chart under General Information for a complete list.
Laboratory Processing Instructions:
Test performed in BJH Core Lab. Deliver to the blood gas workstation immediately.
LOINC Code Information
| Name | LOINC Code |
| pCO2 | 2021-4 |
| pH | 2746-6 |
| pO2 | 2705-2 |