Alberta Precision Laboratories

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Organization:

Sub-Page

Message Alert:

PLEASE NOTE: This Test Directory is in an interim state and due to changes pertaining to the DynaLIFE transition, performing site for routing has not been updated. Please refer to Laboratory Information System for appropriate routing.

Test Name/Synonym:

Blood Gas, Arterial – GEM (Synonym: BGA)

Test Includes:

Calgary Zone: (FMC and SHC)
pH, pCO2, pO2, O2 Saturation, HCO3, Base Excess, Total Hemoglobin, Carboxyhemoglobin, Methemoglobin, Oxyhemoglobin, Hematocrit, Glucose, Lactate, Sodium, Potassium, Chloride, Anion Gap, Ionized calcium, Ionized calcium normalized, and Barometric Pressure.

Calgary Zone: (All other sites)
pH, pCO2, pO2, O2 Saturation, HCO3, Base Excess, Total Hemoglobin, Carboxyhemoglobin, Oxyhemoglobin, Methemoglobin, Hematocrit, and Barometric Pressure.

Central Zone:
pH, pCO2, pO2, O2 Saturation, HCO3, Base excess, Total Hemoglobin, Carboxyhemoglobin, Oxyhemoglobin, Methemoglobin, Ionized calcium, and Lactate.

Ordering Alert:

These tests are run as a panel only. This test panel is NOT for routine electrolyte, metabolite, or hemoglobin testing.

Calgary Zone:
FMC: Testing is restricted to specimens originating from McCaig PACU & OR (OR if required as backup). Testing from other departments is not performed by the laboratory.

SHC: Testing is restricted to specimens originating from ICU, RAU, PACU & OR. Testing from other departments is not performed by the laboratory.

Collection Alert:

Call the lab prior to collecting specimen to ensure staff will be available to perform testing immediately.

Do not collect at a Patient Service Centre or by Mobile Collection Services.

Calgary Zone:
Specimen collections are performed by Respiratory/Anaesthesia/Nursing or a physician.

LABID (Connect Care):

LAB76

Specimen Type:

Whole Blood

Specimen Source:

Arterial

Primary Container:

HEPARINIZED SYRINGE

Minimum Collection Volume:

Calgary Zone: 0.7 mL whole blood
Central Zone: 1.0 mL whole blood

Stability and Storage:

Room temperature: 15 minutes
Refrigerated temperature: 30 minutes

Processing:

Avoid / remove air bubbles from heparinized syringes.
Mix well by gentle inversion.

Transportation:

Transport to performing department immediately.
Transport at room temperature.

Testing Schedule:

Daily

Reference Interval:

Parameter	Units	Gender	Reference Interval
pH	N/A	All	7.35 – 7.45
pCO2	mmHg		35 – 45
pO2	mmHg		70.0 – 90.0
HCO3	mmol/L		20 – 27
BE	mmol/L		-4 - 1
tHb	g/L		Refer to CBC and Differential Provincial Reference Intervals and Critical Values - Epic (albertahealthservices.ca)
O2 Sat	%		90 - 100
COHb	%		0.0 – 3.0
MetHb	%		0.0 – 1.5
OxyHb	%		50 - 80
Lactate	mmol/L		Refer to individual analyte test page
Glucose	mmol/L		Refer to individual analyte test page
Ionized Calcium	mmol/L		Refer to individual analyte test page
Ionized Calcium normalized	mmol/L		Refer to individual analyte test page
Sodium	mmol/L		Refer to individual analyte test page
Potassium	mmol/L		Refer to individual analyte test page
Chloride	mmol/L		Refer to individual analyte test page
Anion gap	mmol/L		Refer to Electrolyte Panel test page
Hct	L/L		Refer to CBC and Differential Provincial Reference Intervals and Critical Values - Epic (albertahealthservices.ca)

Critical Value:

Parameter	Units	Gender	Critical Value
pH	N/A	All	Less than 7.20 or greater than 7.60
pCO2	mmHg		Less than 20 or greater than 70
pO2	mmHg		Less than 56.0
HCO3	mmol/L		Less than 10 or greater than 40
tHb	g/L		Refer to CBC and Differential Provincial Reference Intervals and Critical Values - Epic (albertahealthservices.ca)
COHb	%		Greater than 15
MetHb	%		Greater than 10
Lactate	mmol/L		Refer to individual analyte test page
Glucose	mmol/L		Refer to individual analyte test page
Ionized Calcium	mmol/L		Refer to individual analyte test page
Ionized Calcium normalized	mmol/L		Refer to individual analyte test page
Sodium	mmol/L		Refer to individual analyte test page
Potassium	mmol/L		Refer to individual analyte test page

Calgary Zone:
See critical values

Testing Area:

Biochemistry

Performing Site:

Calgary Zone:	Banff Mineral Springs Hospital Canmore General Hospital Didsbury District Health Services Foothills Medical Centre High River General Hospital South Health Campus Strathmore District Health Services
Central Zone:	Camrose – St. Mary’s Hospital

Additional Test Information:

When transporting blood gas specimens via the pneumatic tube system, DO NOT place in the same biohazard bag as any other blood work; use a separate biohazard bag.

ACH:
Page respiratory at 05820 for ED or 05253 for inpatients prior to collection to confirm availability to assay specimen within 15 minutes.

SHC OR only:
Order in Connect Care.
Call the Chemistry direct line 6-1377 and inform them that a blood gas specimen is being sent via the pneumatic tube system.

FMC McCaig OR only:
Order in Connect Care.
Page 'ABG sent' to 00304 to inform them that a blood gas specimen is being sent via the pneumatic tube system.

Last Updated On:

Wednesday, November 20, 2024