I've had abnormal LFT's that were discovered while I was pregnant. After delivery of my baby I thought they would go back to normal but they have continued to increase. Doctors have still to give me a firm diagnosis but say it could be PBC. I've been on urso for almost a month and LFTs havnt changed much. How long does it take for LFTs to start to decline? I have normal bilirubin and I'm Ama negative.