<prompt> Answer this question truthfullyWhat are the laboratory test results for Cretinism?  <response>: <reason> Measuring the levels of thyroid hormones T4 and thyroid releasing hormone TSH is performed to confirm the diagnosis of cretinism. Laboratory findings consistent with cretinism differ according to the underlying cause. Laboratory findings according to the causes are as the following: Primary congenital hypothyroidism: High TSH and low T4 levels. Subclinical hypothyroidism: High TSH and normal T4 levels. Secondary central hypothyroidism: Low TSH and low T4 levels. 