Normal progesterone levels during the luteal phase

The follicular phase refers to the period from ovulation to the day before menarche. During this period, the uterus continues to thicken under the stimulation of estrogen, actively preparing for the implantation of the fertilized egg. During this phase, the progesterone level increases significantly. So what is the normal progesterone value in the follicular phase? If you never know, just read the article.

Progesterone is the most critical estrogen, and works synergistically with estrogen to produce the physiological cycle. Measuring blood cell progesterone levels is a common test for identifying female estrogen disorders and can also be used to detect the function of the placenta during pregnancy.

Standard value:

The blood cell progesterone value varies significantly at different stages of a woman's life; there is also a certain fluctuation every day, usually higher in the morning than at noon, and the difference is greater during puberty. In order to facilitate comparison, it is generally required to standardize the blood collection time.

Follicular phase: 0.6-1.9 nmol/L;

Ovulation period: 1.1～11.2nmol/L;

Follicular phase: 20.8～103.0nmol／L.

Clinical manifestations:

In the second half of pregnancy, the embryo can metabolize a lot of progesterone. Measuring the blood cell progesterone value can reflect the function of the placenta. If the blood cell progesterone value continues to decrease during pregnancy, it is a sign of premature birth.

1. Determine whether the uterus and ovaries ovulate: The progesterone value in the follicular phase of a normal physiological cycle is very low, generally 0.1-1.0 ng/ml. It gradually increases after ovulation, reaches a peak in 6-7 days, and then maintains a high quality. At this time, a blood test of progesterone value of 5 ng/ml is strong direct evidence for the presence of ovulation.

2. Decreased progesterone: common in primary or secondary amenorrhea, anovulatory menstruation or anovulatory male sexual dysfunction-induced abnormal uterine bleeding, multiple ovarian syndromes, and during the contraceptive pill period.

3. Increased progesterone levels: This is common in physiological pregnancies. After the 8th week of pregnancy, the level increases with the gestational month until it reaches 160 ng/ml at full term. When placental function decreases, the level of progesterone in the blood decreases. Physiologically elevated progesterone levels are common in patients with adrenal hyperactivity, corpus luteum cysts, and adrenergic organ syndrome.