Oestriol Blood Test
Hormones (1 Biomarker)
From the expert
Oestriol is a form of oestrogen produced by the placenta.
About three to five weeks before labour begins the amount of oestriol in the placenta increases dramatically.
Although oestriol is most commonly linked to pregnancy since it is produced in the most measurable amounts at that time, it is still present throughout a woman’s lifetime at varying levels.
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