OT- Thanks gfp, never thought of that. We are brick, so not sure how hard it will be to find downstream, but out of pocket for this will be 3700 min., with ins.....
I had lost track of threshold, but had thought that they were well thought of in the med community, maybe Dr. Tracy????? don't quote me on that, might have wished it, it's been years and years.....
Take Care.