Our study revealed that the GP and GR activities in the serum of CAH patientsof the first group decreased on average 1.6-fold (p < 0.05) and 1.2-fold (p< 0.05), respectively, before the administration of the basic treatment ascompared to the control level(Fig. 5,Fig. 6).The decrease in GRactivity in CAH patients apparently can contribute to the decrease in the GSHlevel. Here, GSR is linked to congenital adrenal hyperplasia.