I'm in favor of getting data.
I missed qualifying for Mensa by 1 point on their test. I had what I'm calling "chemo brain" during it and I had a hard time thinking near the end of it (my processing speed has been slow since I had chemo at 16 and I've suffered from "brain fog" for a long time from it. I recently discovered chemo brain is a known long-term side effect.)

Even though I missed by a point, it validated my feelings that I probably could have benefited from being in a gifted program as a child. Missing by one point didn't really matter... I just wanted to know where I was at.

Even though 130ish is supposedly in the socially optimal range... I still feel like it helps explain why my childhood was so difficult. It also gave me some more confidence in my abilities in face of all the underachieving I've done in my life.

I know now that even on the days when I want to cry because my brain seems to be working so slowly - I am still functioning at a pretty high level. I don't need to feel so desperate about it. I can just accept my slow days and work with what I've got.