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Also reported in: nmol/L, mcg/L
Your mid-luteal progesterone is within the normal range, confirming that ovulation occurred this cycle and that the corpus luteum is producing adequate progesterone for uterine lining preparation.
Your mid-luteal progesterone is very low, indicating either anovulation (no egg was released this cycle) or noticeable luteal phase defect. Without adequate progesterone, the uterine lining cannot prepare properly for implantation, and early pregnancy loss risk is very high.
Seek reproductive endocrinology evaluation. Ovulation induction therapy, cycle tracking, and comprehensive hormonal assessment are needed.
Mid-luteal progesterone very low (<3 ng/mL) — anovulation confirmed or noticeable luteal phase defectYour mid-luteal progesterone is below the threshold that is consistent with adequate ovulation. A progesterone below 10 ng/mL suggests either anovulation or an inadequate luteal phase, where the corpus luteum is not producing enough progesterone to support implantation and early pregnancy.
Discuss with your reproductive hormone specialist. Cycle tracking with basal body temperature and ovulation prediction kits, plus progesterone supplementation in the luteal phase, may be recommended.
Mid-luteal progesterone below optimal (<10 ng/mL) — inadequate luteal phase; possible anovulationYour mid-luteal progesterone is borderline. While ovulation likely occurred, the corpus luteum may not be producing adequate progesterone for optimal implantation conditions. Luteal phase defect at this level may contribute to difficulty conceiving.
Discuss with your reproductive specialist. Vaginal progesterone supplementation in the luteal phase is a common treatment for borderline progesterone levels in women trying to conceive.
Mid-luteal progesterone 10–15 ng/mL — borderline; ovulation may have occurred but luteal support may be inadequateYour mid-luteal progesterone is within the normal range, confirming that ovulation occurred this cycle and that the corpus luteum is producing adequate progesterone for uterine lining preparation.
No specific action required. Ovulation is confirmed.
Mid-luteal progesterone within normal range — ovulation confirmed; adequate luteal supportYour mid-luteal progesterone is in the optimal range. This is consistent with strong ovulation with excellent corpus luteum function, providing ideal progesterone levels for uterine lining preparation and embryo implantation.
No action needed. Excellent reproductive cycle result.
Mid-luteal progesterone in optimal range (15–35 ng/mL) — excellent luteal phase; strong ovulation confirmedYour mid-luteal progesterone is above the typical post-ovulation range. This may reflect early pregnancy (hCG stimulates increased corpus luteum progesterone), exogenous progesterone supplementation, or occasionally a luteinized unruptured follicle (LUF) syndrome.
Take a pregnancy test. If not using progesterone supplements and not pregnant, discuss with your doctor.
Mid-luteal progesterone above optimal range — possible early pregnancy or exogenous progesteroneYour mid-luteal progesterone is noticeably elevated. This is most commonly associated with early pregnancy (in which hCG drives very high corpus luteum progesterone production), exogenous progesterone supplementation, or very rarely an adrenal or ovarian progesterone-secreting tumor.
Take a pregnancy test. If not pregnant and not taking progesterone supplements, seek medical evaluation to exclude rare progesterone-secreting conditions.
Mid-luteal progesterone noticeably elevated — early pregnancy or luteal phase supplementation likelyYour mid-luteal progesterone is very high, most likely reflecting early pregnancy. Very high mid-luteal progesterone is nearly always associated with conception in the current cycle or very high-dose progesterone supplementation during fertility treatment.
Take a pregnancy test. If in fertility treatment, discuss with your reproductive hormone specialist regarding progesterone supplementation dosing.
Mid-luteal progesterone very high — early pregnancy or very high progesterone supplementationUpload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.