Testosterone must be legal federally, legal in at least one state, and available with a level of inconvenience not too far above present. (It's a controlled substance and requires a mental health professional to approve.)

YES if it requires lying to doctors a little bit (pretending to be binary, for instance). NO if there are surgical requirements or "real life experience" requirements or other actually difficult things to lie about, with "just about every" doctor you can find.

NO if it's legal to obtain, but it's illegal to actually use, or doctors are too worried about getting sued to proscribe it, or another reason that it's not practically available.

Also YES if it is very easy to synthesize at home and either legal to do so or very easy to stay out of trouble.

This question is only regarding adults over 18. [Note: when I wrote this, I was intending "adults past their 18th birthday", but as written, it literally means adults 19 and older, so my mistake happens to be convenient. I was not thinking about the possibility of an age limit other than the age of majority. I only intended to ask about adults, excluding emancipated minors for simplicity. However, now that there is likely to be an age limit, I need to set a policy on how I'll resolve this. I feel like my phrase "legal in at least one state" sets a precedent that a YES doesn't require that everyone be able to access testosterone HRT, only people with sufficient money and time and flexibility. So if a 21-year-old can access testosterone, that still counts.]

Because some of the criteria are subjective, I will not trade in this market.