Early transition hormone patterns

Urinary reproductive hormone patterns in a group of 11 mid-reproductive-age (norm, age 19 to 38 years) and 11 late reproductive-age (peri, age 43 to 52 years) females having ovulatory cycles. Note that in late reproductive-age females, FSH is consistently elevated throughout the cycle, estradiol metabolite excretion (E1c) is overall elevated, and progesterone metabolites (PDG) are decreased compared with the mid-reproductive-age female.