Congrats. And it COULD be so many reasons, as Nancy said. Even the weight loss you've had could affect it...

I've had, multiple times, TSH levels drawn two or three weeks apart, because the first one looked fishy, and the next was just fine.

BTW: just above the message window I'm posting in is an ad for a T2D drug. With that slime ball Doctor Phil smiling there. AND a safety notice that it may cause thyroid tumors.

But HEY! If you can keep eating carbage, and lower your BGs, it must be good for you, right?