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.
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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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.