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The 19 pages that link to Thyroid-stimulating hormone, each with the reason it gives.

• Thyroid hormonesRelated: It is the principal upstream signal controlling the gland’s hormone output.

• HypothyroidismRelated: Its level usually rises when the thyroid cannot meet the body's hormone demand.

• Thyroid function testsRelated: TSH is usually the first-line measurement because its level responds sensitively to changes in thyroid hormone.

• HyperthyroidismRelated: Excess circulating thyroid hormone usually suppresses this regulatory signal.

• Iodine deficiencyRelated: Low thyroid hormone can raise this signal, driving thyroid growth during iodine scarcity.

• Amphibian metamorphosisRelated: It helps regulate the hormonal signal that prompts amphibian metamorphosis.

• Hypothalamic–pituitary–thyroid axisRelated: It carries the pituitary signal that directly drives thyroid hormone production.

• LevothyroxineRelated: Clinicians commonly monitor TSH to assess replacement dosing.

• Central hypothyroidismRelated: Low or biologically weak TSH leaves the thyroid inadequately stimulated.

• ThyroxineRelated: Its concentration responds to circulating thyroid hormone levels, including T4.

• TriiodothyronineRelated: TSH regulates the gland’s release of T3 and T4.

• Hashimoto's thyroiditisRelated: Its level typically rises when Hashimoto-related hormone deficiency reduces feedback to the pituitary.

• GoiterRelated: Persistently increased stimulation can promote thyroid growth, especially when hormone production is impaired.

• ThyroidRelated: It is the principal signal from the pituitary controlling thyroid activity.

• Rosalyn Sussman YalowRelated: Sensitive hormone assays helped make blood measurement central to diagnosing thyroid disorders.