I have just got my blood tests back and I must admit the thyroid does confuse me!!

I was diagnosed with thyroid eye disease in 2008 and since then my TPO antibodies have been rising, but my blood tests have always come back normal.
So on the 12 October I saw my endoc dr who did more tests and these are the results:

T4 18.9
T3 6.6
TSH 0.05
TPO'S 200
And I have got to have a short synacthen test and low dose dexamethasone suppression test.

If anyone could help me out with these results and additional tests I would be very grateful.