Labels:text | screenshot | black and white | black | font | document OCR: O TRH IS y also be n hyperthyroidism, the TSH response suppressed. Absent response to TRH ma oitre and infound in certain patients with nodular g e who are patients with ophthalmic Graves' diseas e is thus borderline toxic, An absent TSH respons se to TRH consistent with, but not diagnostic of, hyperthyroidism. A normal TSH respon le to TSH excludes hyperthyroidism (except that di roid adenoma or pituitary T4 resistance). Thy nse to autonomy may result in a flat TSH resp sion test is TRH, but correlation with the T3 suppre s because not as close as might be expected, perhap the the two tests measure different aspects o thyroid-pituitary axis.