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Medical Term:

specific activity



  1. radioactivity per unit mass of the stated element or compound;
  2. for an enzyme, the amount of substrate consumed (or product formed) in a given time under given conditions per milligram of protein;
  3. activity per unit mass of the stated radionuclide.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.