7 ovulation tests + 1 digital pregnancy test. 99% accurate (99% accurate at detecting the LH surge) for any cycle length (One pack is sufficient for most women with regular cycles. If your cycle varies by more than 3 days, you may need to use additional sticks to detect your LH surge). Tells you the 2 best days to conceive. Certain medications or medical conditions, including but not limited to Polycystic Ovarian Syndrome (PCOS) may affect the reliability of this test for predicting ovulation. English and Spanish instructions inside.