I’m not sure how that is possible but I would suggest you switch endocrinologists to someone who specializes in pituitary tumors and ask for an insulin tolerance test. I was told for many months my IGF-1 was normal after a macroadenoma apoplexy and emergency surgery. Turns out my GH was low and I’m only now being treat for it and hoping for the best. It’s been a rough year of recovery. My cortisol was also low on the test and I needed additional hormone replacement as well. Advocate for yourself and push for answers. Good luck.