Hate to break it to you bro, but I'm only 5'5" and that still wasn't short enough to qualify me for GH. My dad is an MD, when I was about 13 or 14 he had me tested for a "short kids" type program. I was only 4'10" when I had that test, I was about 1 inch too tall to qualify. I stopped growing at 16, had my dad test me and my growth plates were closed by my junior year. If you're 5'8", or close to it, you're nowhere NEAR short enough to be considered by any traditional practitioner. Hell, you're barely 2 inches shorter than the average male, just gain 40lbs of muscle and you'll be the biggest kid around that way!