I am female in my forties,
Over the past 10 years when having my thyroid tests done they were all within range. Only a couple a times over the last 10 years my TSH comes back slightly low. The last time it was slightly low was 2013, then now.
I am now seeing an endo that will recheck me in 3 months. I have had antibodies come back normal and a thyroid scan which was also normal. Any thoughts on why I can go so long with normal TSH then a slightly low result would be appreciated.
Below are my latest results.
TSH A 0.28 Ref range 0.32-5.04 mU/L
T4 Free 14.4 Ref range 10.6-19.7 pmol/L
T3 Free 4.71 Ref range 3.00-5.90 pmol/L