Higher Alka phos in normal in growing children as far as I understand... here's some info.

"ALKALINE PHOSPHATASE
Produced in the cells of the bone and liver with some activity in the kidney, intestine, and placenta, it is mostly found in an alkaline state with a pH of 9. Used extensively as a tumor marker it is also present in bone injury, pregnancy, or skeletal growth (elevated readings). Growing children have normally higher levels of this enzyme also. Low levels are sometimes found in hypoadrenia, protein deficiency, malnutrition and a number of vitamin deficiencies.

Normal Adult Range: 20 - 125 U/L
Optimal Adult Reading: 72.5
Normal Children’s Range: 40 - 400 U/L
Optimal Children’s Reading: 220"

GSH is one of the best supplements for supporting the liver. In addition, we use phosphatidyl choline, which was added when AST & ALT were elevated. It did bring back to normal.