Brief Answer:
Thyroid
Detailed Answer:
Thyroid management can be fairly complex and typically an
endocrinologist is best trained to deal with these conditions.
Based on your reports and symptoms, it is possible you may have experienced a condition called
thyroiditis. This is a temporary bruising of the thyroid gland that initially causes excess thyroid hormone to be released in the circulation. This is often associated with high TG (Thyro globulin) levels in the blood as is the case with your lab reports. Gradually this process heals by itself, however during the natural course of recovery the blood levels go through phases of normalcy and
hypothyroidism, before the thyroid finally settles into a steady state of either normal or permanent hypothyroidism.
It is not uncommon for non-thyroid expert doctors to misconstrue this as permanent hypothyroidism even while the thyroid is yet to recover fully. And patients are left with an incorrect lifelong hypothyroidism diagnosis.
Sometimes, if symptoms during the hypothyroid phase of thyroiditis are compelling then it is not wrong to start treatment with
synthroid for a few weeks.
But the best way to approach this is to wean synthroid slowly (take half the pill daily) and check
TSH and free T4 after 6 weeks to see if the numbers change. If they are not significantly different then synthroid can be completely stopped and TSH/Free T4 should be checked again in 6 weeks.
Your
antibodies are negative suggesting that the likelihood of you having permanent hypothyroidism is low.
Do not worry about the high
thyroglobulin levels. They are only a marker of thyroiditis.