Mu. I would choose not undergo such a test in the first place.
I don't believe structure can define identity.
It's fun to read about differences in brain structure, pre-natal hormone washes and the like, but all too often we forget one important factor - inclination. These factors only raise the likelyhood of somebody being transgendered. They aren't a sure thing.
That being said, I know the point of the question is geared more in a social context - so I'll stop being difficult

First and foremost, I think I'd be shocked. It wouldn't change who I was, or my identity, but it might (subconsciously) make me more open to using and improving "female" skills (eg, language skills, communications skills, etc).
... or it could go the other way and I could start overcompensating

But it wouldn't turn me into a female any more than having female bits did. It'd just be another physical bit that didn't match.
Quote from: Sandy on July 17, 2009, 07:54:15 AM
Would you let them flip that switch?
No. Gender is only part of my whole identity, but it is none the less a part. I like who I am, "warts and all" as they say. That's not something I could say years ago, when I was living as female and thought I was cool with it.
Flipping that switch would cause more problems than it'd fix.