My.ABC.Life:Ditto PP. However, I think most Kaisers have a blood lab. I would try calling... and seeing if you can just go to the lab! (Or, if you have to have any type of blood testing with your pregnancy... perhaps they can just look it up in your files).
Ditto this. If you have your online KP account setup, you can go in and view your past lab results. With the pregnancy blood testing, your blood type is listed with the first set of tests they run.