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HelpTest Code VBG Blood Gases, Venous
Additional Codes
|
Test ID |
| VBG |
|
EPIC Test ID |
| LAB79 |
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Heparinized syringe with venous blood.
Acceptable: Dark Green Heparinized tube (must be full)
Specimen Volume:150 uL of heparinized blood
Stability: Must be run in 30 minutes after collection and kept at room temperature
Collection Instructions: Specimen must be kept as anaerobic as possible.
Reference Values
pH
7.30-7.43 units
Critical values
0-30 days: <7.2 units or >7.5 units
≥1 month: <7.2 units or >7.6 units
pCO2
38-58 mm Hg
Critical values
≥18 years: <20 mm Hg or >60 mm Hg
pO2: 19-65 mm Hg
Base excess: -3.0 to +3.0 mmol/L
HCO3: 22-30 mmol/L
CO2
Males: 23.3-29.7 mmol/L
Females: 22.3-28.4 mmol/L
% O2 saturation: 70-80%
Day(s) Test Set Up
Monday through Sunday
Useful For
Blood gas analyses are usually performed for the assessment of either the acid-base status or the respiratory oxygenation status of the patient.
Methodology
Ion-Selective Electrode (ISE)
Includes pH, pCO2, pO2, bicarbonate (HCO3), CO2, base excess, and % O2 saturation.
Test Classification and CPT Coding
82803
Report Available
15 minutes upon receipt.