The uterus is stupid.
It just does what hormones from the ovary tell it to do.
The ovary makes estrogen every day from follicles (eggs) and when the egg pops ( ovulation ) the crater in the ovary where the egg used to be is now called the corpus luteum, and that makes estrogen and progestrone.
The ovary in turn is told what to do by the pituitary gland, which is in your brain. Oh, now I see the connection! The pituitary makes Follicle Stimulating Hormone to recruit an egg each month. It then makes
Luteninzing Hormone to stimulate ovulation.
You thought we were done? NOPE
The pituitary gland is regulated by the hypothalmus. That is an area in the higher brain which pulses out one hormone, GNRH, or gonadotropin releasing hormone.
If you have regular monthly periods, all of this complicated system is in working order. You don't need a blood test to tell you that.
Hormone testing is usually rarely done, even in menopause. No eggs, no estrogen, no message to pituitary. Pituitary screams back. No answer. If you don't believe your body not having periods after age 50 with hot flashes, a test of pituitary function will tell you what you already know.
Hormones are also a moving target with huge ranges of normal. Ever get a result that says normal but you don't feel right? That's the issue.
Any questions? Place a post.
until next time....................