What is the TRH stimulation test?

Updated: Mar 03, 2021
  • Author: Philip R Orlander, MD, FACP; Chief Editor: George T Griffing, MD  more...
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The TRH stimulation test is an older and rarely needed test for helping to assess pituitary and hypothalamic dysfunction. With the improvements in TSH and free T4 assays, TRH stimulation has become outmoded. In the United States, this medication is available only at the National Institutes of Health (NIH).

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