<s>[INST] my son just had liver test done for the second time his first test showed a slight elevation in the enzymes so we retook the test 1 month later and now he is high at 65? what can cause this/ they are sending him for ultrasound of the liver his age is just 12 [/INST] Hi. Thanks for posting query at Chat Doctor. Usually ALT or AST values higher than "two times the upper normal limit", is considered abnormal (in some countries, ALT or AST values of more than 100 are considered abnormal). Value of AST or ALT greater than 85 or above maybe investigated further. Viral hepatitis (HAD, HBV, HCV) are common cause of elevated liver enzymes. Typhoid fever may also affect liver and cause high liver enzymes. Advice : - LOW fat diet should be followed, AVOID junk food and beverages-decreased oil consumption (oily food)- NO red meat-green vegetables should be ingested daily-use lemon juice (lemonade) once in a day-reduce weight if overweight/obese-"recheck liver enzymes after 6 to 8 weeks" and/or ultrasound. Any further questions are welcomed. Hope to answer your concern. Wish your son good health. Regards, Chat Doctor.  </s>