Lupron MIGHT spike the testosterone for a while before it lowers it, so don't be scared of that if it happens, it's one reason my husband refuses Lupron, he's on Firmagon now- was supposed to just do one shot of Firmagon then Lupron but he decided to stay on that instead and the doctors let him because it does the same thing.
I don't remember the last time they tested for testosterone for my husband, but every month they do the PSA test... His initial PSA was almost 300 back in Feb! now it's 0.33
He's been on monthly Firmagon, then Zytiga pills and prednisone and chemo over the summer
(Stage 4 and all over his body!)