hbsag test is available at AIG and it can be done at most of the labs at hyderabad. But I am not sure about the Fibroscan, whether it is available at AIG
However, vijik at the forum informed that this test is available in hitech labs chennai. And in ramakrishna hospital coimbatore.
It is also avialable at ILBS (Institute of Liver and Bilinary Diseases), Delhi. This place seems to have epertise treatment for liver diereses. I will be visiting this place soon and let you about my experience.