No one gets tested for it because it’s very rare for it to not match up with your assigned sex at birth. Why spend hundreds of dollars on a test when you can just ask someone and get things right over 90% of the time? In recent years, doctors have always asked for both gender identity and assigned sex at birth, presumably because both are medically relevant.
But the OP is clearly not about medical data for healthcare purposes.
No one gets tested for it because it’s very rare for it to not match up with your assigned sex at birth. Why spend hundreds of dollars on a test when you can just ask someone and get things right over 90% of the time? In recent years, doctors have always asked for both gender identity and assigned sex at birth, presumably because both are medically relevant.
But the OP is clearly not about medical data for healthcare purposes.