question: Dear Doctor My son is 1 year and 10 months , when he was around 7 months old , I did a routine blood tests to check on his levels . the report showed that his LFT was elevated, ALT- 170 , AST-190.Doctors suggested to wait till be completes 1 year as infants levels can fluctuate. I repeated the tests in intervals of 3 months and his LFT level remained the same , no decrease. As per doctors advise I did the below tests ANA,ASMA,DS-DNA,total globulin,CBC,all virology study, Hepatitis tests, jaudince tests, G6PD,urine for amnioacid,urine for organic acid,blood for aminoacid,serumcerulo plasma, 1alpha beta protein, all these showed normal results. The PCR,EBC,CMV tests showed weak positive.My son is active and his growth is all normal . Doctor please can you confirm why his liver enzyme is still high . Do we have to do any other tests.