Thyroid-Stimulating Hormone (TSH)
Thyroid stimulating hormone (TSH, thyrotropin) is a glycoprotein having a molecular weight of approximately 30000 daltons and consisting of two subunits. TSH is formed in specific basophil cells of the anterior pituitary and is subject to a circadian secretion sequence.
The hypophyseal release of TSH (thyrotropic hormone) is the central regulating mechanism for the biological action of thyroid hormones. TSH has a stimulating action in all stages of thyroid hormone formation and secretion; it also has a proliferative effect.
The determination of TSH serves as the initial test in thyroid diagnostics. Even very slight changes in the concentrations of the free thyroid hormones bring about much greater opposite changes in the TSH level.
Accordingly, TSH is a very sensitive and specific parameter for assessing thyroid function and is particularly suitable for early detection or exclusion of disorders in the central regulating circuit between the hypothalamus, pituitary and thyroid.
Test Status: UKAS accredited
Samples required: 1
Results in: 4 hours
Results Turnaround: 2 - 5 working days
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Victoria, London
170 Vauxhall Bridge Road
Victoria SW1V 1DX
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Saturday: 11:30am.
Sunday: Closed
Wembley, London
Unit 12, Central Business Centre, Iron Bridge Close Great Central Way,
Neasden, London NW10 0UR
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