Progesterone

A reproductive hormone central to the menstrual cycle and early pregnancy.

Last reviewedJune 16, 2026

Serum

sample type

~5 mL

blood needed

~7 days

results in app

Mid-luteal phase for women, about day 21

best timing

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On this page

Why test Reference ranges What you'll learn What affects it How testing works Sources FAQ

In short

Progesterone is a hormone that prepares the lining of the uterus for a possible pregnancy and supports early pregnancy. After ovulation, the ovary releases progesterone during the second half of the menstrual cycle. Men and people who are not ovulating have low, steady levels.

Sex Hormones & Fertility

Reviewed against DGKL reference practice.

Why test this?

Progesterone is most often measured to confirm that ovulation has happened and to assess the luteal phase. It helps when looking into cycle problems, fertility, and recurrent miscarriage.

A clear rise in the second half of the cycle, often tested around day 21 in a 28-day cycle, suggests ovulation occurred. Low levels at that point suggest ovulation did not happen or the luteal phase is short.

What is a normal result?

Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.

Strongly cycle and sex dependent. Guidance only and assay dependent. Ranges vary by lab.

Group or phase	Reference range
Women, follicular phase	below ~3.2 nmol/L
Women, luteal phase	~10 to 90 nmol/L
Women, postmenopausal	below ~2.0 nmol/L
Men	below ~2.0 nmol/L

Source: LOINC 2839-9. Confirm against your own laboratory's range.

Ranges are guidance and vary by lab and assay, aligned with DGKL practice. Always read your result against your own lab's reference interval.

What insights will this test give you?

Your result, timed to your cycle, shows whether and how well you ovulated. It supports work on irregular cycles, trouble conceiving, and luteal phase concerns.

What can affect this result?

What can skew the result

Timing within the cycle is critical, since levels rise and fall sharply. Progesterone medication and hormonal therapies change results. High-dose biotin supplements can interfere with certain assays.