What is the reason for abnormal HBA results in newborn disease screening?

Patient's question:

My baby is just 22 days old, and I received the hospital report today.

Doctor's answer:

Analysis of the condition:
Screening for thalassemia using HBA. However, some results are significant, while others are transiently elevated.
Advice:
Re-examination may be necessary if needed. Additionally, it's important to consider whether the child has any clinical manifestations. This condition is hereditary, so early treatment should be initiated.