Ovulation tests may show two red colors when you are pregnant. Ovulation tests test for elevated luteinizing hormone and pregnancy tests test for elevated chorionic gonadotropin. Chorionic gonadotropin consists of alpha and beta subunits. Chorionic gonadotropin-alpha chain and luteinizing hormone-alpha chain are structurally identical and can cross-react, causing the ovulation test to show two red colors when you are pregnant. Menopause can be determined by checking blood chorionic gonadotropin levels, and for accurate results, blood beta-chorionic gonadotropin levels can be tested to see if you are pregnant. Blood chorionic gonadotropin levels not only determine pregnancy, but also assist in the diagnosis of ectopic pregnancy, trophoblastic disease, etc. depending on the specific elevation. In addition, it is important to see your doctor for further testing to rule out the possibility of ectopic pregnancy.