Jan 18, 2018




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Blood Gases and O2 Saturation

Blood Gases and O2 Saturation (HCBGASOS) Blood Gas Lab Test

Name: Blood Gases and O2 Saturation

Test Name: Blood Gases and O2 Saturation

Health Link Test Code: HCBGASOS


CPT Code(s): 82805

Test Component:

pH, pCO2, pO2, base excess, actual bicarbonate, oxygen saturation and oxygen content.

Methodology: Electrode/Spectrophotometry

Days Performed: Daily, 24 hours.

Stat In-Lab Turnaround Time: Less than 30 minutes.

Patient Preparation:

For venous samples on outpatients, send patient to UWHC Outpatient Phlebotomy to be drawn.

Specimen: Arterial, venous, or capillary

Collection Container: Radiometer PICO® syringe

Also Acceptable: 2 full Radiometer capillary tubes

Collection Instructions:

Radiometer "PICO"® syringes must be free of bubbles and clots. Two full Radiometer capillaries free of air bubbles and clots are needed for capillary blood.

Collection Volume: 1.5 mL

Pediatric Collection Volume: 0.5 mL

Stability Ambient:

30 minutes

Stability Frozen:

Not acceptable

Sample Analyzed: Whole Blood

Testing Volume: 1.5 mL

Pediatric Testing Volume: 0.5 mL

Specimen Transport:

Transport specimen to UWHC Hospital Laboratory immediately. Assure specimen receipt in the lab is within 15 minutes of collection.

Unacceptable Criteria:

Clotted specimens, specimens with air, or specimens past stability time are not acceptable.




1 day to 10 days:

11 days and up:




0 days-23 months:

24 months and up: 

27-41 mmHg

34-46 mmHg  



 pO2, resting 1 day and up:  80-90 mmHg 
 Base Excess

0 days to 30 days:

31 days to 12 months:

1 year to 17 years:

18 years and up: 

-10.0 to -2.0 mmol/L

-7.0 to -1.0 mmol/L

-4.0 to +2.0 mmol/L

-2.5 to +2.5 mmol/L 




0 days to 30 days:

31 days to 12 months:

1 year to 17 years:

18 years and up: 

17.0-24.0 mmol/L

19.0-24.0 mmol/L

16.0-24.0 mmol/L

22.0-26.0 mmol/L





0 days to 30 days:

31 days and up:





 1 year and up:   15.0-22.0 mL/dL 

 Venous Specimen: This reference range is literature based.

pH                                        7.31-7.41 
pCO2 40-52 mm Hg
pO2 25-40 mm Hg
Actual Bicarbonate 22-28 mmol/L
Oxygen Saturation 60-85%

Capillary Specimens: reference intervals are not well established in the literature.  Capillary results may or may not correlate with arterial values.

Interpretation Type: Reference Interval

Effective Date of Reference Range: Mon, 06 Jun 2016 07:00:00 CDT

Critical Calls: yes