when someone is exposed to poison, it goes through the body and is usually excreted. but it also gets deposited in the hair root at the time of the exposure. when the hair grows out, the shaft becomes a historic record of when the exposure took place. when phil s hair grew longer, a strand was sent for an icp test which tests for 22 different metal components at the same time. the hair was cut into quarter inch pieces and marked and mixed with water and boiled for seven hours. this cocktail was then put through the icp. the test results were startling. when he was in the hospital, his hair showed no exposure to poison. prior to that when phil was