Integrative Medicine -- Any Experience Out There?

I am keeping an open mind as to what is best going to help my son with his ADD. We are exploring therapy, medication as well as natural supplements and organic foods. Recently I was advised by an expert in the natural supplement field that I should have a full blood analysis done by an integrative doctor - a medical doctor that is also a holistic doctor.

Does anyone have experience with this? Can you share some advice with me and others?

Thank you,
Karen