Glucose 6 Phosphate Dehydrogenase (G6PD) deficiency screen
Haematology Overview / Directory
Purpose of the test
Description: G6PD deficiency is a common hereditary enzyme deficiency causing varying degrees of haemolytic anemia; can cause favism, some drug induced haemolytic anemias, and chronic nonspherocytic haemolytic anemia. Any samples with a deficient screen will have a full G6PD assay performed.
Reference Range
End point up to 60 minutes
Sample Requirements
Minimum 1 ml EDTA blood. FBC and reticulocyte count must be performed and results sent with samples. Samples with a reticulocyte count > 2.0% will require a G6PD assay performed. If more than one enzyme assay is required then > 1.0 ml of blood will be required.
Storage and Transport
Samples can be sent first class post. Samples must be received in the laboratory within 3 days of collection. If there is a delay in sending store at 4°C
Turnaround Time
10 working days
Time Limit for Extra Tests
Depends on tests required. Contact laboratory for further details.
Factors affecting results or interpretation
Recent blood transfusion.
Raised reticulocyte levels and/or raised WBC levels may affect assay.
Contacts
Tel 020 3299 9000 Laboratory Ext 2455 Office Ext 4337
