Hello, and I hope I can help you today. An isolated elevated liver enzyme can happen in healthy people with no discernible explanation. Because your SGPT is only slightly over the expected level, I really do not think that anyone is going to be particularly concerned. I do agree that doing tests for hepatitis would be helpful, and if you are not already immune, the Hep B vaccine (which is completely safe during pregnancy) would be in your best interest to protect yourself. Doctors may never be able to completely find out a reason why your liver enzymes are slightly elevated, as many normal healthy people have that happen once and a while. However what I can tell you is that this is not something that is caused by stress or pregnancy. I hope I was able to adequately answer your question today, and that my advice was helpful. Best wishes for the rest of the pregnancy, Dr. Brown