I am pregnant with underactive thyroid. I'm currently on 150 mcg levothyroxine. I had a hospital appointment a couple of weeks ago and they did a test for anti-TSH receptor antibodies. my result came back as 1.1 (normal range 0-1). Is this so to normal close that they don't worry about it? I haven't heard anything from hospital and my GP doesn't seem to know about this test. Thanks!