Menopause is defined as the one day when a woman has not had a menstrual period for 12 months. For women who have had surgery to remove their uterus, an ablation of the uterine lining, those using an IUD, or those who have a medical condition that makes diagnosis less straightforward, menopause can be diagnosed utilizing specific laboratory tests such as FSH (follicle stimulating hormone), AMH (Anti-Mullerian Hormone), Estradiol levels and the exclusion of other medical conditions such as a thyroid condition.