My LTKR is scheduled for May 15, but I had some concerns about metal sensitivity so I had the patch test done. It came back with some sensitivities, so my OS suggested a blood test. Just received the results and it showed a mild reactive to several different metals. My question is at what level should I be concerned? The test has 4 different levels. Normal 0-2, Mild reactive 2-4, Reactive 4-6, High reactive 6 and above.