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pregnandiol
Subject h. pregnandiol Subject h. Pregnanediol Scope note in English An inactive metabolite of PROGESTERONE by reduction at C5, C3, and C20 position. Pregnanediol has two hydroxyl groups, at 3-alpha and 20-alpha. It is detectable in URINE after OVULATION and is found in great quantities in the pregnancy urine. 
subject heading
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