Susan,

Your son reminds me a lot of my son (diagnosed with CAH at 61/2), though I agree with you and Bonnie that the picture is not crystal clear. 

Do you have a copy of his growth chart since birth?  If you look at all his heights and weights on one growth chart, it can be very telling.  If he kept going to a higher and higher percentile line on the growth charts each year (e.g. 50th, then 75th, then 90th, then off the charts altogether, etc.) if can be a very good indication that you need to test for CAH.  On the other hand, if he stayed at the same percentile line each year, even though he was off the charts, it could be a different problem.

It sounds like you have been seeing an endocrinologist for a while.  Why was your son referred to one, in the first place? What metabolic disorders were they looking for?

My son has been taking Lupron shots since shortly after diagnosis.  He was in the very early stages of true puberty, at the time.  I pulled out his old records and you might be interested to know that his LH value prior to stimulation was actually lower than your son’s, so I am not sure that they can truly get an accurate picture by just looking at a baseline number, especially if puberty is in the very early stages.

The T value is confusing.  One would expect that it would be a bit higher in someone with CAH or CPP.  Was the test taken in the morning or afternoon?  It is also confusing that your son has so few other signs of androgen excess (e.g. no body odor.)

You mentioned that your son’s testicles have increased in size.  Do they just look bigger to you, or has the doctor actually felt around  and measured them?  (Sheesh...calmly discussing testicle size at 8:30 am, while having my morning coffee.  What is the world coming to?  LOL!!)