What does high AST (SGOT) and ALT (SGPT) mean?

I've recently did two blood tests (one on January and one on March) and both tests said I have high AST (SGOT) and ALT (SGPT). My AST was 57 and ALT was 148. (I heard from my doctor that normal people usually have below 40 on AST and 50 on ALT.) My doctor said I don't seem to have Hepatitus B and... show more I've recently did two blood tests (one on January and one on March)
and both tests said I have high AST (SGOT) and ALT (SGPT).

My AST was 57 and ALT was 148.
(I heard from my doctor that normal people usually have below 40 on AST and 50 on ALT.)

My doctor said I don't seem to have Hepatitus B and C.

I do not drink any types of alcohol beverages.
(maybe once or twice a month but not too heavy though.)

What can this mean?
Can this possibly lead to a liver cancer?
Update: I am not taking any medicines except omeprazole (acid reducer). Thank you.
6 answers 6