radioreceptor assay

ra·​dio·​re·​cep·​tor assay | \ -ri-ˈsep-tər- How to pronounce radioreceptor assay (audio) \

Medical Definition of radioreceptor assay

: an assay for a substance and especially a hormone in which a mixture of the test sample and a known amount of the radiolabeled substance under test is exposed to a measured quantity of receptors for the substance and the amount in the test sample is determined from the proportion of receptors occupied by radiolabeled molecules of the substance under the assumption that labeled and unlabeled molecules bind to the receptor sites at random

Learn More about radioreceptor assay

Cite this Entry

“Radioreceptor assay.” The Medical Dictionary, Merriam-Webster Inc., Accessed 13 December 2019.

Comments on radioreceptor assay

What made you want to look up radioreceptor assay? Please tell us where you read or heard it (including the quote, if possible).


easily led, controlled, or managed

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!