Zebra, God Bless You. I am so sorry that this happened to you too. I'm not sure which exact testings the Integrative Medicine Doctor did, but, he was suspicious that I had gene mutation issues after contuing to being so sensitive to meds and reacting to the 2nd infusion which had Glutathione (Sp?) in it. He told me to come off all of my vitamins because i wasn't absorbing them and to let's start out clean. I find out next week the treatment plan. He also wants all allergy testing done on me (I have horrible allergies, chronic upper respiratory infections, etc.,) ..... I'm so sorry about your brothers....but I Praise the Lord yours was found early enough to treat. Praying for all that replied here. Blessings and hope you had a wonderful Thanksgiving.