Glucose Phosphate Isomerase (GPI) Assay
Haematology Overview / Directory
Purpose of the test
Description: GPI deficiency results in hereditary nonspherocytic haemolytic anaemia
Reference Range
38 - 83 IU/g Hb
Sample Requirements
Minimum 1 ml EDTA blood. 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 and send a normal sample collected on the same day to act as a travel control.
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
