Hi Hezzer! Since nobody has answered you, I will try to help, but I am not a doctor. You should ask your doctor exactly what he is testing for, and why. He/she should be willing to tell you. What I do know is that when the liver is suffering from damage, and it cannot do it's job well, then there are certain enzymes or substances that show up in blood tests that check for liver function. This alerts the doctor that the liver is suffering, so they can try to find out why. Some drugs can cause this to happen. I'm not sure about lyme, but I suppose an overworked liver caused by diseases/toxins is possible. I think it is somewhat common for certain drugs to do this. When the test shows the levels going up, the drug can be stopped, or the dose adjusted, and often the tests will return to normal after some time. I have experienced this. It is good that your doc tests you. It is an early warning sign to discover a potential problem.
Best wishes to you. bablymers mom