Cushing's syndrome patients at the Pituitary Center may be referred for inferior petrosal sinus sampling.
Hypothyroidism comes in several varieties.
Some patients have trouble with their thyroid gland while others have trouble with the pituitary control over their thyroid. Patients with primary hypothyroidism are those who have trouble with the thyroid gland. In this situation the thyroid gland does not make sufficient amounts of thyroid hormone. In these patients, elevated TSH levels suggest thyroid hormone deficiency. In essence, the direction of the TSH level points to the necessary adjustment of the thyroid hormone replacement dose.