This blog explains what hormones are tested in ZRT's Fertility Profile and why each one is important.LH & FSH are pituitary hormones, which means they affect the brain. Their communication with growing egg follicles in the ovaries is one of the only positive feedback loops in the body. On day three or four of the menstrual cycle (day one is the first day of the period) LH & FSH are at their lowest…


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