Test Entry - Detail

Venous Blood Gas

General

Clinical Use:

Used to assess acid-base status, blood gases and electrolytes in venous whole blood samples.

Availability:

Analysis of samples by laboratory staff is available at QEII, FSH and RPH.

Aliases/Synonyms:

Blood Gas (Venous), VBG,

Code:

VBG

Handling Instructions (to laboratory):

Sample must reach laboratory within 30 minutes of collection.

Hyperlink:

Reference Interval:

Adult Venous Blood Gas Reference Intervals
pH: 7.32 to 7.43
pCO2: 37 to 50 mmHg
pO2: 36 to 44 mmHg
Bicarbonate: 22 to 28 mmol/L
Base Excess: -3 to 3 mmol/L
O2 saturation: 70 to 80 %    
Sodium: 135 to 145 mmol/L
Potassium: 3.5 to 5.2 mmol/L
Chloride: 95 to 110 mmol/L
Anion Gap: 7 to 17 mmol/L
Glucose: 3.0 to 5.4 mmol/L (Fasting)
Lactate: <2.0 mmol/L 
Ionised Calcium: 1.12 to 1.32 mmol/L
Hb: 135 to 180 g/L (Male); 115 to 160 g/L (Female)
OxyHb      
CarboxyHb: <6.0 %
MetHb: <1.5 %

Collection Requirements

Container:

Blood Gas Syringe (SYRINGE),

Sample Type:

See container

Minimum Collection Volume:

Collection Instructions:

Collection can be requested for routine phlebotomy rounds at QEII, FSH and RPH. (Sites where blood gas analysers are located in the laboratory).

Processing Requirements

Alternate Containers:

Processing Instructions:

After collection, the sample should be analysed immediately. If manually transported to the laboratory, sample should be kept chilled during transport.
Treat sample as irreplaceable.

Minimum Assay Volume:

200uL

Stability:

30 minutes ambient

Transport Instructions (to testing laboratory):

Deliver samples as soon as possible to the laboratory by hand. The pneumatic tube system is not recommended for transport of these samples as analytes may be affected.

Testing Locations

Performed at:

Section	Department	Site	Contact Phone
Core	Biochemistry	Fiona Stanley Hospital	6152 8140
Core	Biochemistry	QEII Medical Centre	6383 4093
Core	Biochemistry	Royal Perth Hospital	9224 1176

Last Updated : 24-05-2023 09:13