Glucose 6 Phosphate Dehydrogenase G6P, Blood (Referred Out) - Saskatoon

Discipline

Biochemistry

Overview

Alias

G6PD
Glucose 6 PD

Specimen Information

Specimen types accepted

Whole blood

Specimen collection container

Preferred collection container: Lavender (EDTA)

Collection procedure

Store and ship refrigerated

Required volume

Optimal volume: Full 4.0 mL collection tube

(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection.)

Rejection criteria

Specimens received where the collection protocols were not followed
Pathology and Laboratory Medicine Acceptance and Rejection Criteria

Testing Information

Clinical interpretation

Used in the evaluation of G6PD deficiency and work up of certain hemolytic disorders

Performance

Days/times performed

Availability	Collect only 0800 to 1500 Monday through Thursday
Testing site	Quantitative G6PD is referred out by St. Paul’s Hospital Laboratory to Dynacare, London, ON

Maximum laboratory time

Results reporting

9 day turnaround time by testing laboratory

Reflex testing

Order G6PD screen only; If positive, the quantitative code will be ordered by the laboratory, and the specimen sent for referral

Last Updated: January 9, 2026