rate of loss -- how fast?

[SteveDT123]

Hello,

I noticed some thinning in the crown area when I was ~21 or 22. At 23 I started Propecia for 6 mos then stopped then started again a few months later. Since then I have been using propecia daily. I am now 27 and I think the crown has gotten slightly worse-- but not bald yet. My hair line receeded a bit on both sides-- but my hair is still fairly thick on the top of my head everywhere else. I'm thinking Im a Norwood 2 probably?

(1) So Im curious does it sound like the propecia is working? Or should I have experienced zero loss between when I started taking it and now?

(2) what are the specific tests that I see people refer to that examine the genetics and hormone levels? Where can I get one?

(3) In general what is everyones rate of loss between first noticing and going completely bald. Im hoping that the propecia is slowing it down enough to get out of my 20s and into my 30s, but I cant really gauge it.

Thanks!
Steve