I have gleaned so much info while reading that I decided to join the forum.
I am 40+ and had my first full blood tests ran a few weeks back. I also had my first consultation with Dr. Calkins at Defy. I am at the beginning of the journey.
Defy is located in Florida, but their practice model permits them to treat patients who live anywhere in the United States. They also offer "advice only" consultations to international patients.