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HelpTest Code VBG Blood Gases, Venous
Synonyms/Keywords
Venous Blood Gases, VBG
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 volume.
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)
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
Base Excess (Calculated) ≥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 |
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 |
| Weston | Monday through Sunday | Less than 2 hours | Radiometer |
| Eau Claire | Monday through Sunday | Less than 2 hours | Gem 4000 |
| Park Falls | Monday through Sunday | Less than 2 hours | Gem 4000 |
| Rice Lake | Monday through Sunday | Less than 2 hours | Gem 4000 |
| Marshfield | Monday through Sunday | Less than 2 hours | Gem 4000 |
| Minocqua | Monday through Sunday | Less than 2 hours | Gem 4000 |
| Neillsville | Monday through Sunday | Less than 2 hours | Gem 4000 |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82803 | Gases, blood |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Blood Gas Venous |