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HelpTest Code AA Arterial Blood Gases, Blood
Methodology
Electrode
Includes pH, pO2, pCO2, tCO2, and sO2 calculated.
Performing Laboratory
Munson Healthcare Laboratories
Specimen Requirements
Specimen must arrive within 10 minutes of draw.
Container/Tube: Heparinized blood gas syringe or capillary tube. Specimen exposed to air is not acceptable.
Specimen Volume: 0.5 mL of whole blood from heparinized syringe or 0.1 mL of whole blood from blood gas capillary tube
Transport Temperature: Ambient
Collection Instructions: Forward immediately. Specimen must be analyzed within 30 minutes of draw.
Reference Values
pH: 7.34-7.44 pH units
Critical values (automatic call-back):
Pediatric patients up to 21 years old: ≤ 7.20 pH units or ≥ 7.50 pH units
Patients 21 years and older: ≤ 40 7.20 pH units or ≥ 7.60 pH units
pCO2: 32-44 mm/Hg
Critical values (automatic call-back):
Pediatric patients up to 21 years old: ≤ 30 mmHg or ≥ 70 mmHg
Patients 21 years and older: ≤ 20 mmHg or ≥ 70 mmHg
pO2
0-9 years: 92-108 mm/Hg
10-19 years: 91-107 mm/Hg
20-29 years: 87-103 mm/Hg
30-39 years: 83-99 mm/Hg
40-49 years: 79-95 mm/Hg
50-59 years: 74-90 mm/Hg
60-69 years: 70-86 mm/Hg
70-79 years: 66-82 mm/Hg
80-89 years: 62-78 mm/Hg
≥90 years: 54-74 mm/Hg
Critical value (automatic call-back):
Pediatric patients up to 21 years old: ≤ 40 mm/HG or ≥ 150 mmHg
Patients 21 years and older: ≥ 40 mm/Hg
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82803