Serum progesterone distribution in normal pregnancies compared to pregnancies complicated by threatened miscarriage from 5 to 13 weeks gestation: a prospective cohort study.

BMC Pregnancy Childbirth · 2018 · PMC6126027 · PMID 30185145

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an increasing trendno p-value reported

One of the earliest studies on progesterone in pregnancy showed an increasing trend of plasma progesterone from conception to delivery [ 12 ].

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