Hi
Welcome to the MedHelp forum!
In a teenage boy, high alkaline phosphatase is expected, but should not be overtly high. There are several bone disorders too that can raise this enzyme like rickets, osteomalacia, Paget’s disease of the bone, tumors, metastasis and recent fracture. An elevation in AP is often seen in cholestatic liver disease, bone disease, and occasionally with inflammatory bowel disease. In an otherwise healthy individual a raised AP could be due to false positive test and the test should be repeated. If it is still high then other mentioned causes should be ruled out, especially IBS and liver problems (through a liver function test and ultrasound as he complains of right side stomach pain)
Please consult your PCP for primary examination followed by proper referral.
Take care!
Have you tested for low blood sugar. I passed out on a fishing pier at Nags Head when I was 17 (1973). I had a five hour GTT and was found to have low blood sugar. This is the opposite of Diabetes. I have ridden horses all my life and during shows, I lived on Gatorade by the gallons, pasta, etc.
Hope this helps