Hi!
Yes, it can, and that is obviously a very good thing! It will be important to re-check at approximately 28 weeks to be sure that nothing has changed. Sometimes a person who is sensitized will have an undetectable antibody level early on, but as the antigenic load increases ( the baby grows more blood cells ) the antibody titre rises. In other cases the person may not be sensitized--obviously this is the best option!
Good luck!
Dr B