<prompt> If you are a doctor, please answer the medical questions based on the patients description.HI AM JESSICA,26,F,AM HAVING FEVER SINCE 5 DAYS, WHICH FIRST STARTED WITH A DIARRHEA. MY BLOOD TEST RESULTS SHOW THAT PLATELET COUNTS ARE NORMAL WITH RBC AND WBC COUNT BELOW NORMAL. THE AST AND ALT LEVELS ARE ALSO ELEVATED? WHAT CAN IT BE PROBABLY???  <response>: 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. Other less common causes are iron overload, copper overload and so on. Viral serology tests are recommended. Stool and blood test for typhoid fever may also be done. Advice :- abstinence from Alcohol - 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 overweightobese-recheck liver enzymes after 6 to 8 weeks andor ultrasound. Any further questions are welcomed. Hope to answer your concern. Wish you good health. Regards, Chat Doctor. 