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Estriol (also oestriol) is one of the three main estrogens produced in humans. It is only produced in large amounts during pregnancy as it is made by the placenta. Levels of estriol in non-pregnant women do not change much after menopause, and levels are not significantly different from those in men. Estriol levels can be a good indicator of the health of the fetus. DHEA is produced by the adrenal cortex of the fetus, this is converted to estriol by the placenta. Low levels during pregnancy may indicate a problem with the development in the child. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See for details. Source: Wikipedia, Estriol (Wikipedia)

A hydroxylated metabolite of estradiol or estrone that has a hydroxyl group at C3-beta, 16-alpha, and 17-beta position. Estriol is a major urinary estrogen and during pregnancy, large amounts are produced by the placenta. Isomers with inversion of the hydroxyl group or groups are called epiestriol. Source: National Library of Medicine, MeSH 2006

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Component (Describes the core component or analyte measured)
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Language Variants

Tag Language Translation
zh-CN Chinese (China) 雌三醇
Synonyms: E3;雌甾三醇
fr-CA French (Canada) Estriol
et-EE Estonian (Estonia) Östriool
es-ES Spanish (Spain) Estriol
it-IT Italian (Italy) Estriolo
tr-TR Turkish (Turkey) Östriyol
ru-RU Russian (Russian Federation) Эстриол
nl-NL Dutch (Netherlands) oestriol
fr-BE French (Belgium) Estriol
Synonyms: E3