<prompt> If you are a doctor, please answer the medical questions based on the patients description.I received the results of my ALT--78 29, AST--4730. I not a drinker, smoker, drug abuser. Received vaccine for Hep B. All other labwork was normal. Progresterone levels were low-normal. What could cause this? Ht--5ft 4inches; Weight --150; Blood pressure--normal  <response>: Hi! Mildly elevated ALT AST levels in asymptomatic patients are commonly seen in practice. Alcohol obviously, isnt the culprit in your case. In my practice I look for Non-Alcoholic Fatty Liver in cases similar to yours. An ultrasound of the abdomen reveals it. Among other causes are medication induced liver injury, hepatitis Cpresuming the hepatitis B vaccine is working. Then there are a few rarer liver disorders hemochromatosis, Wilsons disease, autoimmune hepatitis, alpha -1 antitrypsin deficiency. Conditions not directly related to the liver but still leading to elevated ALTAST levels include thyroid disorders, celiac disease, muscle disorders and red blood cell breakdown hemolysis. Do write in for more info. Best of luck! 