I have an 8 year old SWCAH boy and a 7 year old SWCAH girl, and for as far back as I can remember, we have always had 17OHP, Renin, Androstenedione(sp?), a basic metabolic panel, DHEA, and for my son I am pretty sure I remember checking testosterone levels, and then of course we do the bone age x-rays.  We would normally go every 6 months if their labs and growth were on track, but since they have not been, we go every 3 months.