Update
Today I received a message from Angrist. He has some good news to report:
"I just called the docter and they had the results of the bloodtest: I'm recovering from mono. In other words I just had it and I'm almost over it! Now that's good news!
He said I have these anti-bodies against it, but there's still something wrong with my liver. So... if it doesn't get better within a few months I have to take another blood test.
Actually I already feel better! Cycling has become a lot easier!"
That's good Angrist, now you won't have to miss weeks of school.

Hope your liver improves.
