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An estrogenic metabolite of estradiol, usually the predominant estrogenic metabolite found in urine (especially during pregnancy); epimers at C-16, C-17, or both, are known as 16-epiestriol, 16,17-epiestriol, and 17-epiestriol.
estriol(ĕs′trī-ôl′, -ōl′, -ŏl′, ĕ-strī′-)
An estrogenic hormone, C18H24O3, that is a metabolite of estradiol and is present chiefly during pregnancy. It is produced by the placenta and is found in the urine of pregnant women.
oestriolThe weakest of the three natural human oestrogens; it only appears in significant amounts during pregnancy as it is produced by the placenta from 16-OH DHEA-S, an androgen produced by the foetal liver and adrenal glands.
Medspeak-UK: pronounced, EE stree oll
Medspeak-US: pronounced, ESS tree oll
estriolPhysiology A steroid hormone, the synthesis of which depends on a sequence of biochemical reactions in the placenta or fetus in a functional compartment, the fetoplacental unit–FPU. See Triple marker.
An estrogenic metabolite of estradiol, usually the predominant estrogenic metabolite found in urine (especially during pregnancy).