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Test Name:
Blood Gases, Venous
- SBMF No:
23676 - Performance Lab Name:
Hospital Lab - Test Mnemonic:
VBG - ABN:
Not required - CPT Code:
82803 - LOINC Code:
2746-6; 2021-4; 48391-7; 14627-4; 1927-3; 2705-2 - Test Includes:
pH
PCO2
PO2
Carbon Dioxide (calculated)
Bicarbonate (calculated) - Also Known As:
Venous Blood Gases - Spec Type:
Whole blood - Spec Container:
Green top (lithium heparin) tube - Alt Spec Type:
Whole blood - Alt Spec Container:
Heparinized syringe - Pref Vol:
5.0 mL - Min Vol:
2.0 mL heparin tube - or - 1.0 mL heparinized syringe - Fasting:
No - Spec Collect:
Routine venipuncture - Spec Process:
Mix sample well by gently inverting end-to-end
Do not centrifuge
Do not remove plasma from cells
Do not remove tube stopper
Promptly place in a container of ice slush (ice and water mixture) - Spec Store Transport:
Transport in ice slush - Spec Stability:
4 hours in ice slush - Spec Reject:
Not iced
Contains air or clots
Received more than 4 hours after collection
Tube vacuum seal broken - Methodology:
Ion-selective Electrode (ISE) - Use:
Evaluate respiratory function, acid-base balance - Clinical Significance:
- Reference Range:
pH: 7.35-7.44
PCO2: 34-50 mmHg, venous
CO2: 21-29 mEq/L
HCO3: 24-28 - Critical Low Value:
pH: 7.19
PCO2: 19 mmHg - Critical High Value:
pH: 7.61
PCO2: 71 mmHg - Day Run:
Sun-Sat (daily) - Time Run:
As received - Time Reported:
Routine: 1 hour
STAT: 20 minutes - Test Type:
GAS-LYTE
