pregnanediol
(prĕg′nān-dī′ôl)- A steroid metabolite of progesterone that is biologically inactive; a form of the compound occurs in the urine of pregnant women.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.