What is the probability that the couple would have

a child that was also a carrier for sickle cell

anemia?

Go to the Prenatal Testing page for more details. If one parent has sickle cell trait (HbAS) and the other has sickle cell anaemia (HbSS) there is a one in two (50%) chance that any given child will get sickle cell trait and a one in two chance that any given child will get sickle cell anaemia.