Hexokinase Assay
Haematology Overview / Directory
Purpose of the test
Description: Hexokinase deficiency is a rare cause of hereditary nonspherocytic haemolytic anaemia. Other more common causes, such as PK deficiency or G6PD deficiency should be eliminated first.
Reference Range
1.00 - 2.54 IU/g Hb
Sample Requirements
Minimum 1 ml EDTA blood. FBC and reticulocyte count must be performed and results sent with samples. 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
