Deficiency of which of the following hormones lead to hypothalamic hypothyroidism, which is also called tertiary hypothyroidism?

Deficiency of which of the following hormones lead to hypothalamic hypothyroidism, which is also called tertiary hypothyroidism? Correct Answer TRH

TRH secretion disorder gives rise to hypothalamic hypothyroidism, also called tertiary hypothyroidism, which can occur as an isolated defect or as a hypothalamic disease. Molecular genetic studies have demonstrated infrequent autosomal recessive mutations in the TRH and TRH receptor genes.

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