Re: low TSH vs low FT3/FT4 question
You can have hypothyroidism with low TSH if the problem stems from the pituitary. Your nodular thyroid sounds suspicious for Hashimoto's thyroiditis, an autoimmune disorder that produces antibodies against your thyroid and eventually destroys it. Have you ever had anti-thyroid antibodies tested? If not, I nwould ask for those, and ask to try some thyroid replacement as a trial to see if you feel better. A pituitary panel (blood test) could be done also to check the other pituitary hormones, like ACTH for adrenals. One must treat the Patient, not the lab results, I want to scream from the rooftops.