To measure or monitor your estrogen levels; to detect an abnormal level of hormone imbalance as a cause of your signs and symptoms; to monitor treatment for infertility or symptoms of menopause; occasionally to test for fetal-placental status during early stages of pregnancy.

Women: when you show indications of a hormone imbalance, such as abnormal vaginal bleeding, lack of menstrual periods, unusual and/or early or late sex organ development; when you are undergoing infertility treatment or therapy for menopause symptoms; when you are pregnant and our healthcare practitioner wants to monitor the health of our placenta and developing baby, if it is a high-risk pregnancy.

Men: when you have signs of feminization, such as enlarged breasts (gynecomastia)

There are no test preparations. However, sample collections need to correlate with your menstrual cycle. If you are pregnant, the sample will correlate with the gestational age of the baby.