Test Directory
Antenatal Haemoglobinopathy Screen
Containers - Adult
Red Cap Tube EDTA KE 2.7ml
|
Volume Range
>1.5ml |
Reference ranges
HbA2 : 2.2 - 3.2 %
The presence of iron deficiency may mask an elevated HbA2, and the patient should be retested after they have undergone a course of iron therapy.
HbF : < 1.0 %
The HbF level will only be reported if detected.
Laboratory Site
Old Dalkeith Road
Edinburgh
EH16 4SA
Transport arrangements
Specimen must be transported within a plastic sealable bag or other suitable container. Sample MUST be recieved within 24 hours of collection
Special instructions for collection
A Full Blood Count is always performed alongside the Haemoglobinopathy screen.
How to request
The Family Origin Questionairre (FOQ) form MUST be completed
Availability
Monday - Friday: routine service 09:00 - 17:00. Test not available during restricted service.
Anticipated turnaround
5 days
What happens if the result is positive or abnormal
The Laboratory will inform the Foetal Medicine Midwives any abnormal results, for approriate follow-up.
General additional information
Blood transfusion may make interpretation unreliable. If a haemoglobinopathy cannot be characterised then further studies may be undertaken.
This assay detects the presence of the abnormal haemoglobins, HbC, HbD, HbE, HbS and other rarer variants. The quantitation will be reported as appropriate.