Thanks for the reply.
She is from India. I am calling the quest diagnostic centers but they don't seem to understand what an INR test is or a PT Time Test. I am planning to walk into one of their locations with a print out of the test description.
I am looking for a testing facility for my mother who has recently visited from Indian. She had an MVR done an year ago and has to get her INR level tested every 3 weeks. I have called a couple of medical centers asking if they do INR Tests or Prothrombin tests and the reception typically does...