What is the reason for the ovulation test paper to be positive during menstruation?

Women are a relatively special group. At the same time, they are also relatively fragile and easily susceptible to infection or harm. Ovulation test strips are a newly emerging object that can effectively help us confirm our ovulation period. The test results of ovulation test strips are divided into positive and negative. However, a large number of people do not understand why the ovulation test strips show a strong positive result during menstruation.

As the ovaries change, the endometrium is also affected and undergoes corresponding cyclical changes. Estrogen causes the endometrium to thicken, the endometrial cells to increase in number and size, and the arterioles in the interstitium to become more tortuous and spiral, which is called the proliferative endometrium.

After ovulation, due to the combined effects of estrogen and progesterone, the endometrium becomes edematous, the glands produce a large amount of mucus and glycogen, and the thickness of the endometrium increases from 1 mm to 6 mm, which is called the secretory endometrium. If the egg released at this time is fertilized, the fertilized egg is transported to the uterus through the fallopian tube for development, which is called pregnancy. The pregnancy tissue synthesizes a chorionic gonadotropin, which supports the continued development of the corpus luteum of the ovary. If the egg is not fertilized, the corpus luteum will atrophy and stop secreting estrogen and progesterone about 14 days after ovulation. At this time, the blood vessels in the endometrium contract, the endometrium necrotizes and falls off, causing bleeding and forming menstruation.

Therefore, the length of the menstrual cycle depends on the length of the ovarian cycle, which is generally 28-30 days[1], but varies from person to person and can be 23-45 days, or even 3 months or half a year as a cycle. As long as it is regular, it is generally considered normal menstruation. The bleeding time is generally 2-7 days, and the total amount of bleeding each time is 30-50ml. Some people believe that menstrual volume exceeding 80ml is a pathological condition.

There is still some controversy about ovulation test strips, but the benefits outweigh the disadvantages. There are also some things worth noting in the operation of ovulation test strips. There is more than one interpretation of the test results of ovulation test strips. When conducting the test, follow the product instructions and there will generally be no major problems.