Thank you for your query.
You mentioned that you son has beta thalassemia
trait. Though his haemoglobin
and serum iron
levels are on the lower side of normal which explains the microcytic hypochromic anaemia
on pheripheral smear. There is nothing to get alarmed about. He can be given iron and vitamin supplements and his haemoglobin repeated after a month to see the status.
I hope I have answered your query to your satisfaction.