I'm a little late with this reply (been busy) but standard thyroid tests are virtually useless for mercury toxic persons.

Also, for my situation, I took a thyroid supplement and it did wonders for me by increasing energy and clearing up brain fog and lifing my overall mood.

Depending on the issue, a thyroid supplement like this is not for everyone, but if your thyroid issues stem from mercury toxicity, I believe it will greatly help the vast majority of people.