Hello Lora: I do not understand why no other test were run at the same time. My daughter was diagnosed last year, she is now 8 years old, but at the time of the test, samples for androstedione, 17-hydroxypregnenolone, DHEA Sulfate, 17-oh Progesterone and cortisol were measured at fasting, 30 and 90 minutes after. From these results the endocrinologist confirmed the condition. The results of your son are a little low in cortisol meaning that he may have Late onset CAH, but I’m not a doctor. Measuring 17-oh progesterone is the most common thing to do, since most of the product of the disorder takes this form.  After my daugther was diagnosed with lo-cah we went to NIH. If you need more information do not hesitate to contact me. My telephone is 787-823-7367 and you will find me after 6:oo p.m. eastern time.