What is the normal progesterone level on the second day of menstruation?

In daily life, many people seek to better understand their health status by verifying whether certain physiological values fall within normal ranges—thereby enabling timely prevention and treatment. So, what is the normal progesterone level on the second day of menstruation?

What is the normal progesterone level on the second day of menstruation?

For women, the standard progesterone level on the second day of menstruation typically ranges from 0.1 to 3 nmol/L. During menstruation, progesterone levels fluctuate but generally remain above 0.1 nmol/L. If a woman’s progesterone level falls significantly below this threshold, she may experience lower abdominal pain, abnormal body temperature, menstrual cycle disturbances, and even impaired fertility.

To assess luteal and ovarian function, progesterone testing is best performed in the premenstrual phase. During the first half of the menstrual cycle—prior to ovulation—progesterone levels are essentially undetectable (i.e., ~0 nmol/L), as no tissue is yet producing progesterone. Following ovulation, the corpus luteum forms in the ovary and begins secreting progesterone. Consequently, progesterone becomes detectable only from the luteal phase onward, gradually rising to reach its peak just before menstruation—the sole hormonal peak across the entire menstrual cycle. Menstruation occurs only after this peak declines due to withdrawal of progesterone support. Thus, progesterone levels on the second day of menstruation should be extremely low.

In daily life, avoid spicy and irritating foods; drink plenty of water to promote metabolism. Engage in moderate outdoor physical activity to strengthen immunity. We hope this information is helpful to you!