IGF1 and glucose measurement: Logistic regression analysis of age, BMI, and the parameters random GH, GHn, and %ULN IGF-I showed that an improvement in glucose tolerance status was associated with a lower follow-up %ULN IGF-I (p = 0.001, OR = 1.011) and could be predicted by younger age (p = 0.044, OR = 1.042).