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Test Code VBGLH Blood Gases, Na/K/Ic and Hemoglobin, Venous

Important Note

For internal ordering only. Not available to outreach clients.

Synonyms/Keywords

Ven.Bld.Gases & Na/K/Ion.Ca w/Hgb

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   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. 

 

Ice pack cooling is not required if the sample is analyzed within 30 minutes. If blood gas analysis will not be performed within 30 minutes after specimen collection, transport sample in a cold pack or prepare a container with ice water capable of maintaining refrigerated temperatures and large enough for immersion of the barrel of the capped/sealed syringe.

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood Ambient 30 min
On Cold 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), Sodium, Potassium, Ionized calcium, and Hemoglobin

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.

Interferences

Potassium is only stable for 20 minutes on ice. Longer delays will falsely elevate the result.

Reference Range Information

Performing Location Reference Range
Marshfield

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  

 

Sodium:
133-144 mmol/L  

Potassium:
Newborns (0-12 months):  3.3-5.9 mmol/L 
≥ 12 months:   3.4-5.1 mmol/L

 

Ionized Calcium:
0-4 days: 4.3-5.5 mg/dL
5-29 days: 4.8-6.0 mg/dL
1 mo.-20 yrs.: 4.9-5.5 mg/dL
≥20 yrs.: 4.5-5.3 mg/dL

 

Hemoglobin:
Newborn: 15.0 - 24.0 g/dL
1 - 23 months: 10.5 - 14.0 g/dL
2 - 9 years: 11.5 - 14.5 g/dL
Male:
10 - 17 years: 12.5 - 16.1 g/dL
18+ years: 12.9 - 17.3 g/dL
Female:
10 - 17 years: 12.0 - 15.0 g/dL
18+ years: 11.7 - 15.5 g/dL
See Critical Value List for list of current critical values

Marshfield Labs Performing Department

Marshfield Labs Urinalysis

Performing Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Beaver Dam Monday through Sunday Less than 2 hours Gem 5000
Marshfield Monday through Sunday Less than 2 hours Gem 4000 
Minocqua Monday through Sunday Less than 2 hours Gem 4000

CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
82803     Gases, blood  
 84295       Sodium  
84132      Potassium  
82330      Ionized Ca  
85018     Hemoglobin  

Ordering Applications

Ordering Application Description
Cerner Ven.Bld.Gases & Na/K/Ion.Ca w/Hgb