Free Beta HCG (Human Chorionic Gonadotropin) is produced by the placenta during pregnancy. This test is used to confirm pregnancy, detecting ectopic pregnancy, potential miscarriage and screening of downs syndrome. High levels of beta HCG may also indicate a specific type of ovarian cancer in women and testicular cancer in men. Beta HCG is normally present in low amounts in men and women, the level of beta HCG increase during the initial period of pregnancy and falls to negligible levels after delivery. This test is also used to evaluate treatment with certain anticancer drugs and the patient’s response to the treatment and its effectiveness.