What should estrogen levels be on day 3?
Estrogen levels can vary quite a bit on day 3. They can be as low as 20 or as high as 100. If an estrogen is over 80 in my lab on day 3, it indicates that woman is maturing a follicle too fast. Sometimes that is a sign of impending problems with ovulation and usually is accompanied by a high FSH. A very low estrogen on day 3 might also be a problem, but most commercial ways to measure estrogen are not good enough to tell apart ‘normal’ low from ‘abnormal’ low levels on that day.
