Unit of thyrotrophic activity | definition of unit of thyrotrophic activity by Medical dictionary
unit of thyrotrophic activity
u·nit of thy·ro·troph·ic ac·tiv·i·ty
the activity of an amount of an extract of the anterior lobe of the hypophysis that, given daily for 5 days, will cause the thyroid of a guinea pig (weighing 200 g) to reach a weight of 600 mg.
unit of thyrotrophic activity An obsolete, non-SI (International System), semi-quantitative unit corresponding to the amount of adenohyophysis extract required by an immature 200 g guinea pig to result in thyroid gland with a final weight of 600 mg.