Hi, and welcome to our little corner of the web.
I don't know if this is true or not, but our psychiatrist keeps telling me to hang on because for some of these kids (some, not all) seem to get to 19 and maturity kicks in and the hormones aren't raging as much as they were in the younger teenaged years. I don't know if it's true or not as we're not at that age yet, but that is what he keeps telling me.
Who did the testing that your son just underwent? What were they teting for?