UHS and UTHSCSA
Department of Pathology


 

BLOOD GAS REFERENCE RANGES

ARTERIAL

Venous

Capillary

Cord

Component

Reference Range

Reference Range

Reference Range

Reference Range

pH

0-1 hour

7.33-7.49

7.30-7.46

7.33-7.49

1 hour-1 day

7.25-7.43

7.22-7.40

7.25-7.43

1 day-1 month

7.32-7.43

7.29-7.40

7.32-7.43

>1 month

7.35-7.45

7.26-7.43

7.35-7.45

All Ages

7.23-7.40

pCO2

MALE

Male/Female

0-2 days

27-40mmhg

34-47mmhg

3 days-2 years

27-41mmhg

34-48mmhg

>2 years

35-48mmhg

41-51mmhg

FEMALE

0-2 days

27-40mmhg

3 days-2 years

27-41mmhg

>2 years

32-45mmhg

All Ages

31-35mmhg

33-58mmhg

pO2

0-5 minutes

8-20mmhg

8-20mmhg

5 minutes-1 hour

31-94mmhg

31-94mmhg

1 hour-3 hours

55-95mmhg

55-95mmhg

3 hours-1 day

54-93mmhg

54-93mmhg

1 day-1 month

60-70mmhg

60-70mmhg

1 month-59 years

83-108mmhg

83-108mmhg

60 years- 89 years

75-85mmhg

> 89 years

66-74mmhg

All Ages

20-40mmhg

12-35mmhg

HCO3 (Bicarbonate)

0-2 days

27.0-24.0mmol/L

3 days-2 years

16.0-23.0mmol/L

>2 years

21.0-28.0mmol/L

All Ages

22.0-29.0mmol/L

22.0-26.0mmol/L

24.0-28.0mmol/L

BEB (Base Excess)

0-2 days

(-10)-(-2) mmol/L

3 days-2 years

(-7)-(-1) mmol/L

3 years-18 years

(-4)-(+2) mmol/L

>18years

(-2)-(+3) mmol/L

All Ages

(-2)-(+2) mmol/L

(-2)-(+2) mmol/L

(-2)-(+2) mmol/

TCO2 (CO2 Content)

All Ages

22-26 mmol/L

13-22mmol/L

14-22mmol/L

RI (Respiratory Index)

All Ages

0.00-0.15

AADO2 (Alveolar-Arterial O2 Gradient)

All Ages

7.0-13.0

 

COOXIMETRY REFERENCE RANGES

COMPONENT

Reference Range

Reference Range

Arterial

Venous

HG (Hemoglobin)

Male

13.5-18.0 g/dl

13.5-18.0 g/dl

Female

12.0-16.0 g/dl

12.0-16.0 g/dl

%O2 HB (% Oxyhemoglobin)

0-2 days

97-100%

40-90%

>2 days

94-100%

40-70%

%COHB (% Carboxyhemoglobin)

Smoker

1.5-5.0%

1.5-5.0%

Nonsmoker

<1.5%

<1.5%

%METHHB (% Methhemoglobin)

0-1.5%

0-1.5%

%RHB (%Reduced Hemoglobin)

0-3.0%

0-3.0%

O2CT (Oxygen Content)

Male

17.6-24.3 vol%O2

7.5-17.5 vol%O2

Female

15.7-21.6 vol%O2

6.7-15.6 vol%O2


1. The information in the DOLS web site is developed for and intended to help the clinicians of our academic medical community: The University Health System; The University of Texas Health Science Center at San Antonio; The South Texas Veterans Healthcare System: Audie Murphy Memorial Veterans Hospital.
2. If you are from outside of our community and you find that the information is helpful, you are welcome to it, however, we encourage you to consult with your local experts and your health science center libraries for more information.


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Last updated on 28 April 2010 by John D. Olson, M.D., Ph.D.