If a hepatitis panel is done and all results are negative, but hepatitis a results are considered gray zone (A AB IgM) what does this mean. I was diagnosed several years ago, my age is 63, with autoimmune hepatitis. Prescribed prednisone and imuran. Dr. Stopped the prednisone after several months. I stopped the imursn on my own because of constant nausea. Dr. Made no other suggestions. At the time, I had many symptoms of hepatitis, including jaundice, fatigue, etc. I have no symptoms now of acute hepatitis. I just wanted to know what gray zone means, and is this the reason I've been asked to repeat bloodwork in a week?