What does you doctor say ??  Most labs put the normal values right next to the tested values.  Ask the doctor for the lab reports. 

Also are you getting the 170HP done by ped endo lab?? One ped endo doctor told me that the best lab was in California.  I moved to Germany now so I am not sure that is still true.

CAH kids will never have "normal" values.  Then on top of that there is not agreement on where the levels need to be maintained.  Some doctor over treat. Some doctors under treat.... with theories of growth. 

Our poor kids are lab rats for some doctors!!