Question
What does an immune anti-A titer of 1:32 in pregnant women’s serum mean?
Answer
In blood type testing, an immune anti-A titer of 1:32 in a pregnant woman’s serum indicates the concentration of anti-A antibodies. This condition may occur when the mother’s blood type is O and the father’s blood type is A or B. The higher the titer, the greater the risk of neonatal hemolytic disease. However, even with a titer of 1:32, the risk of neonatal hemolytic disease is only about 20%, and most cases are mild. The key is to understand the specific titer value and determine whether further attention and intervention are needed.