Question

Ab titers specific to antigens from the ABO system are typically highest when ________.

1) When the patient is around 30 years old
2) When the patient is around 60 years old
3) When the patient is a newborn
4) When the patient is around 10 years old

Answer 1

AB titers specific to antigens from the ABO system are typically highest when the patient is a newborn.

Step-by-step explanation:

The titers specific to antigens from the ABO system are typically highest when the patient is a newborn. ABO antibodies are produced in the first years of life through sensitization to similar antigens commonly found in the environment. For example, anti-A antibodies are thought to originate from an immune response to an antigen on the influenza virus, and anti-B antibodies are likely formed in response to other similar antigens.