Antenatal haemoglobinopathy screening in Australia

Area of Science:

• Medical Genetics
• Hematology

Background:

• Microcytic indices, unexplained anemia, and high-risk ethnic populations necessitate haemoglobinopathy screening.
• Early detection and management of haemoglobinopathies are vital for maternal and fetal health.

Purpose of the Study:

• To outline the essential components of haemoglobinopathy screening.
• To emphasize the importance of early and pre-conception screening for haemoglobinopathies.

Main Methods:

• Screening involves full blood count, ferritin assay, haemoglobinopathy tests (electrophoresis, HPLC, capillary electrophoresis), and clinical risk assessment.
• Optimal testing conditions include iron repletion to avoid obscuring diagnoses like beta-thalassaemia trait.

Main Results:

• Iron deficiency can mask beta-thalassaemia trait, highlighting the need for careful interpretation of results.
• Genetic testing is available but currently has lengthy turnaround times, reinforcing the need for early screening.

Conclusions:

• A standardized, national approach to haemoglobinopathy screening and genetic testing, including a registry, is needed to manage this increasing health issue.
• Timely screening and genetic testing improve the management of haemoglobinopathies, particularly for at-risk populations.