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Few possibilities: These labs seem at odds, with TSH suggesting overactive thyroid and ft4 underactive thyroid. Free T4 tests can be inaccurate in some people who have interfering substances present. Another possibility is a tumor in the pituitary secreting too much TSH resulting in thyroid overactivity, and high thyroid hormone levels. This is quite rare, however. Your doctor can help sort this out. ...Read more
Had TRH (thyrotropin) stim test to evaluate pituitary/thyroid func.TSH base=3.27 TSH @ 0, 30, 60 min, respectively 1.48, 1.34, 1.10, opposite of norm?
TRH Stim Test: You are right. TSH should have elevated from TRF infusion. The flat response indicates pituitary hypofunction. This can be due to adenoma, pituitary "infarction" with pregnancy delivery associated blood loss and hypotension, or surgical removal. (You would be aware of that for sure...). So, MRI is essential. And some other hormone testing, such as ACTH and cortisol, prolactin, etc ...Read more
3.1 Prolactin level? Pituitary Microadenoma TSH levels up and down, no other tests done. Is this level okay?
Tsh has gone to .007 to .02 now .07 still very low! my Synthroid 88 my lowest dose ever. Is this showing another problem? Pituitary?
Appropriate: Your TSH level should go higher (as it has) as your dose of thyroid hormone is lowered. Tsh, a pituitary hormone which regulates thyroid output, moves inversely with the level of thyroid hormone. You latest level indicates your current dose of medicine is still higher than you need. You may need a very small dose. It's even possible that, at least for a while, you may need none at all. ...Read more
Pituitary failure responsible for hypo or hyperthyroid & TSH goes to low or high side of normal range?
Tumor forming TSH: TSH-secreting pituitary adenomas are benign tumors of the pituitary gland. They produce too much thyroid stimulating hormone (TSH) which causes the thyroid gland to enlarge and produce thyroid hormone in excess, leading to an overactive thyroid (hyperthyroidism) .most common initial therapy for patients with a TSH-secreting pituitary adenoma is transphenoidal resection of the tumour. ...Read more
Could TSH 0.6 & ft4 0.9 & extreme fatigue/low body temp possibly suggest pituitary problems? More workup or seek other etiology?
Work up: Hopefully, you have been referred to an endocrinologist to discuss these laboratory results. Single values in a vacuum often do not tell the whole story, and the hypothalamic, pituitary, thyroid, end organ axis can have a number of reasons for these results. Best to discuss with the person who ordered the tests to get an appropriate referral and make sure you're up to speed with the plan. ...Read more
Help my TSH was 0.83 range is 0.3 - 5.6 my cortisol am fasting serum was 254 range is 185 - 624 honstly is there a chance for pituitary microadenoma ?
See below: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. The results you provided do not suggest the presence of pituitary lesion nor do the results rule it out. What makes you suspect that you have pituitary microadenoma? ...Read more
With low TSH 0.02 but all normal thyroid and pituitary gland tests what could,be causing the suppressed tsh? Confused please help....
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