I request that any of you who are in the position of doing so request your physician perform a growth hormone stimulation test. Even my endocrinologist says that this is the only way to properly diagnose GH deficiency. Relying on IGF-1 as a marker for GH deficiency has proven faulty in several studies which I will reference if need be. Please ask for an insulin tolerance test (0 deaths out of thousands have been reported during this test). Basically they attempt to stimulate GH secretion with insulin. They make you go hypoglycemic then draw your blood to test for serum GH. Some other GH stimulation tests use arginine or glucagon and growth hormone releasing protein, but you virtually have to be braindead to not show some response to these. GH repairs the nervous system. IT regenerates neurotransmitters overnight. IGF-1 IS NOT A GOOD MARKER FOR GH PRODUCTION. I will be having mine tested within 2 weeks via an insulin tolerance test/GH stim test with insulin. Please guys do this. GH deficiency symptoms are very similar to CFS symptoms. GH must maintain an active role in mitochondrial regeneration. It is no surprise that we all have nervous system problems and comorbid depression. I was on pharmaceutical grade GH through a pharmacy that did not offer insurance coverage for one month and had complete remission of my CFS I have been afflicted with. Mold and toxin exposure can inhibit and destroy proper GH functioning. Low gaba and choppy sleep can inhibit GH secretion during the night. I use gabapentin to sleep properly (200-300mg a night) doctor rxed. Unfortunately my GH is still low as shown on some preliminary tests. I beg you all to properly test your GH output via the stimulation test. For those of you that did not respond to GH, consider low total or free active sex hormones.