Progesterone is made by the ovaries after ovulation and supports early pregnancy.
- Normal range (adults)
- Men 0.1–0.3 ng/mL (0.32–0.95 nmol/L) · Women 0.1–28 ng/mL (0.32–89 nmol/L)
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- Serum Progesterone, P4, Progesterone Level, Progestogen
Progesterone normal range
| Group | ng/mLConventional units: US, South Asia | nmol/LSI units: UK, Europe, Australia, international |
|---|---|---|
| Men | 0.1–0.3 | 0.32–0.95 |
| Women | 0.1–28 | 0.32–89 |
In women, progesterone is low before ovulation and rises after it. The upper value applies to the luteal phase.
Your report may use either unit system; labs in the Gulf often print both. Ranges also vary slightly between laboratories, so the range printed on your own report is the one to go by.
Why is the Progesterone test done?
A blood test about 7 days before an expected period (day 21 of a 28-day cycle) confirms that ovulation happened.
What does a high Progesterone level mean?
High progesterone is normal after ovulation and in pregnancy.
Common causes
- Luteal phase of the cycle
- Pregnancy
- Progesterone treatment
- Rare adrenal conditions
Diet and lifestyle tips
- No changes needed
What does a low Progesterone level mean?
Low progesterone in the second half of the cycle suggests ovulation did not occur.
Common causes
- No ovulation (PCOS, thyroid problems, high prolactin)
- Approaching menopause
- Testing on the wrong day
Diet and lifestyle tips
- For PCOS: balanced low-sugar diet, exercise and weight management
When should you see a doctor?
Discuss with your doctor if you are trying to conceive or have irregular periods.
Last updated
This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.