I shot my boss an email this afternoon, reiterating that I'd been at the doctor today and the test results won't be back until Monday. I told him that, since I didn't want to hear the news out in public, I was indeed taking my long-scheduled Personal Day on Monday I gave him a quick overview of all my projects and noted that, since I worked ahead, no one should be inconvenienced by my absence.
His response? Here it is, in total.
Thanks, Boss. That will sustain me and feed my hungry soul.