Before you panic too much, just follow your doctor's plan. She's probably trying to figure out if the Kevzara is causing the white cell drop by doing labs before and after the shots. It does look like your prednisone taper was pretty fast if you started at 10. I have been on Kevzara one month and have to wait another two weeks to start tapering and then drop .5 mg every 3 weeks. Even if you go off Kevzara you may be able to stay on prednisone at a lower dose. Not to minimize your concerns but I like what Mark Twain said : " I know that worrying works because everything I worry about doesn't happen".