Thank you.My husband has had two blood tests over the past week to determine the reason for:low grade temp, sometimes as high as 101.5 profuse sweating if the temp is over 101.Headache, and fatigue.Today we discovered his white blood cell count has returned to normal vs. being low one weke ago,His kidney levels are now fine vs. being elevated one week ago.But his liver function is still elevated.Blood work is free of any form of Hepatits, mono, etc.The doctor now wants an ultrasound performed.Do i need to really worry?