IGF1 and acromegaly: The Consensus on Criteria for Cure of Acromegaly 2010 defined biochemical cure to be (at 6 weeks postoperative followup visit) a random GH measurement of 2.5 μg/liter or less, glucose-suppressed (nadir) GH less than 1.0 μg/liter, and a normal sex- and age-matched IGF-1 level [12, 19, 29].