High Progesterone (P4): what it means
A Progesterone (P4) result above the normal range is considered high. Here is what a raised Progesterone (P4) can point to, and when it is worth discussing with a doctor.
Reference range: Follicular <1, luteal 3–25 (>3 confirms ovulation); rises into the hundreds in pregnancy; post-menopause <0.5 ng/mL
Understand your full resultWhat a high Progesterone (P4) can mean
- Ovulation has occurred — a mid-luteal value >3 ng/mL confirms it; this is the intended reading.
- Pregnancy — rises progressively.
- Congenital adrenal hyperplasia — an enzyme block shunts steroids toward progesterone precursors.
- Ovarian cysts (corpus-luteum cyst) — can prolong elevation.
- Progesterone supplementation — exogenous, expected.
When to discuss with a doctor
The single most useful use of progesterone is a mid-luteal draw to confirm ovulation — timed 7 days before the expected next period, not blindly on day 21, because that assumption breaks with irregular cycles. A value >3 ng/mL means you ovulated; a low value in a woman trying to conceive prompts the anovulation work-up (thyroid, prolactin, androgens, PCOS assessment). Very high progesterone in a non-pregnant woman with virilisation should prompt evaluation for congenital adrenal hyperplasia. Mediora.AI shows progesterone alongside its cycle timing and companion hormones; the fertility interpretation belongs with your gynaecologist or fertility specialist.
Conditions this can relate to
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Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.