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22268 Blood Gases, Venous

Blood Gases, Venous
Test Code: VBG
Synonyms/Keywords
Venous Blood Gases, VBG​
Test Components
Panel includes Blood Gas (pH, partial pressure of carbon dioxide pCO2, partial pressure of oxygen pO2, base excess BE, O2 Saturation, calculated HCO3-Marshfield Only) ​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​Whole Blood​Balanced Heparin Syringe​3 mL Lithium or Sodium-heparin Green Top (GTT)​1 mL​0.4 mL​140 uL in a 1 cc Syringe​
Collection Processing Instructions
Draw blood without tourniquet and fist clenching. If a tourniquet must be used, do not release it during the collection. DO NOT introduce air into the syringe. Syringe must be filled to usual draw volume. Ice pack cooling is not required if the sample is analyzed within 30 minutes.
Specimen Stability Information
Specimen Type Temperature Time
Whole Blood​ ​ Ambient​ 20 min​
On Ice Pack​ 45 min​
Rejection Criteria
​Other anticoagulants such as EDTA, citrate, oxalate, and fluoride
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Diagnostic Treatment Center​ ​Monday through Sunday​ ​Less than 2 hours​ ​Radiometer
​Eau Claire ​Monday through Sunday ​Less than 2 hours ​I-Stat
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​Gem 4000
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​I-Stat
Marshfield​ Monday through Sunday​ Less than 2 hours​  ​Roche Cobas b221
​NeillsvilleMonday through Sunday​​Less than 2 hours​​​​I-Stat​
Test Information
Oxygen saturation results generated in satellite laboratories (CCU, ICU, PICU) by Respiratory Therapy staff or using I-Stat instruments are calculated from PO2. Oxygen-saturation results in the lab at Marshfield are obtained by CO-Oximetry and reported as Percent Fractional Oxyhemoglobin (FHbO2) which includes the contribution of any dys-hemoglobins (carboxy-, met-). Accordingly, when dys-hemoglobins are present, (Lab) FHbO2 results may differ significantly from O2 saturation (SO2) obtained by calulation or using pulse oximetry.​
Reference Range Information
Performing Location Reference Range
All Performing Sites​
pH 7.32 - 7.42
pCO2 40 - 55 mm Hg
pO2 30 - 50 mm Hg
 
Base Excess (Calculated)  
 <=2 years: -8.0 - 0.0 mmol/L
 >=3 years: -3.0 - 3.0 mmol/L 
 
Oxygen Saturation   All ages 60 – 85%
 
Calculated HCO3 (Marshfield Only)
<=2 years: 17 - 24 mmol/L
>=3 years: 22 - 28 mmol/L
 ​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82803 ​ ​ ​ Gases, blood ​ ​
Synonyms/Keywords
Venous Blood Gases, VBG​
Test Components
Panel includes Blood Gas (pH, partial pressure of carbon dioxide pCO2, partial pressure of oxygen pO2, base excess BE, O2 Saturation, calculated HCO3-Marshfield Only) ​
Ordering Applications
Ordering Application Description
​Centricity

​a. Blood Gas, Ven. 

b. Venous Blood Gases

​Cerner Blood Gas Venous​
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​Whole Blood​Balanced Heparin Syringe​3 mL Lithium or Sodium-heparin Green Top (GTT)​1 mL​0.4 mL​140 uL in a 1 cc Syringe​
Collection Processing
Draw blood without tourniquet and fist clenching. If a tourniquet must be used, do not release it during the collection. DO NOT introduce air into the syringe. Syringe must be filled to usual draw volume. Ice pack cooling is not required if the sample is analyzed within 30 minutes.
Specimen Stability Information
Specimen Type Temperature Time
Whole Blood​ ​ Ambient​ 20 min​
On Ice Pack​ 45 min​
Rejection Criteria
​Other anticoagulants such as EDTA, citrate, oxalate, and fluoride
Test Components
Panel includes Blood Gas (pH, partial pressure of carbon dioxide pCO2, partial pressure of oxygen pO2, base excess BE, O2 Saturation, calculated HCO3-Marshfield Only) ​
Reference Range Information
Performing Location Reference Range
All Performing Sites​
pH 7.32 - 7.42
pCO2 40 - 55 mm Hg
pO2 30 - 50 mm Hg
 
Base Excess (Calculated)  
 <=2 years: -8.0 - 0.0 mmol/L
 >=3 years: -3.0 - 3.0 mmol/L 
 
Oxygen Saturation   All ages 60 – 85%
 
Calculated HCO3 (Marshfield Only)
<=2 years: 17 - 24 mmol/L
>=3 years: 22 - 28 mmol/L
 ​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Diagnostic Treatment Center​ ​Monday through Sunday​ ​Less than 2 hours​ ​Radiometer
​Eau Claire ​Monday through Sunday ​Less than 2 hours ​I-Stat
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​Gem 4000
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​I-Stat
Marshfield​ Monday through Sunday​ Less than 2 hours​  ​Roche Cobas b221
​NeillsvilleMonday through Sunday​​Less than 2 hours​​​​I-Stat​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82803 ​ ​ ​ Gases, blood ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.