Like the others stated, donate as soon as you can. Not to scare you, but if it gets much higher, you may be rejected, then you'll need to get an rx phlebotomy. Also, with your current t level, you might consider decreasing your dose a bit. This, along with donating, should keep your hct level down. I was at 54.5. I donated and lowered my dose. From what I've read, hct may decrease anywhere from 2-6% when you donate.

Edit: oops. I guess bass already said most of what I did.