Alberta Precision Laboratories

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Organization:

Alberta Precision Laboratories

Test Name/Synonym:

Glucose-6-Phosphate Dehydrogenase (G6PD)
(Synonym: G6PD Screen, G6PD Confirmation)

Clinical Indications:

Testing for congenital hemolytic anemia, especially if it is induced by oxidative stress (eg. eating Fava/Broad beans). Testing prior to initiation of oxidative medications such as primaquine (anti-malarial).

Ordering Alert:

CBC must also be ordered/available for testing at the same time of G6PD.
Reticulocyte Count is recommended.

Specimen collection for G6PD shall be collected prior to transfusion of red cells.

Collection Alert:

Test cannot be collected by Mobile Collection Service.

LABID (Connect Care):

LAB571

Specimen Type:

Blood

Specimen Source:

Venous, Arterial, Capillary and Central Line

Primary Container:

Lavender EDTA

Alternate Containers:

Microcollection EDTA

Minimum Collection Volume:

1 mL
Microcollection 0.5 mL

Specimen Collection Requirements:

Ensure tube is completely filled. Mix well immediately after collection by inverting tube 8 to 10 times.

Test Resources:

Indicate test under Additional Tests Section

General Laboratory Requisition – 21302

Stability and Storage:

7 days at 2 – 5 °C

Processing:

DO NOT centrifuge.
Refrigerate immediately.

Transportation:

Refrigerated: If transporting on ice, ensure tube is not in direct contact with ice pack so specimen does not freeze.

Testing Schedule:

Batched

Reference Interval:

See Laboratory Report.

Critical Value:

See Laboratory Report.

Testing Area:

Hematology

Performing Site:

Foothills Medical Centre - G6PD screen
University of Alberta Hospital - G6PD confirmation

Additional Test Information:

G6PD Screen or G6PD Confirmation is performed depending on ordering location. G6PD Confirmation will be performed on equivocal or positive G6PD Screens.

Contact Comments:

1-877-868-6848

Last Updated On:

Wednesday, June 4, 2025