Question

Explain why the concentration of FSH in the blood increases after day 1​

Answer 1

Answer:

For basic fertility testing and to evaluate ovarian reserves, you need to have the blood test on day 3 of your menstrual cycle (day 1 is the day your period begins). However, most doctors are OK with the test being done on any day between days 2 to 4.

Explanation:

Answer 2

Answer:

As the levels of FSH and LH in the blood increase with puberty, the eggs begin to mature and a collection of fluid — the follicle — begins to develop around each one. The first day of menses is identified as cycle day one. Estrogen is at a low point. ... This increase in estrogen begins to inhibit the secretion of FSH.

Explanation: