The Expect LH fertility test is a urine test used to determine ovulation. The release of the egg, the rupture of the follicle (ovulation) is preceded by a sudden, wave-like increase in the level of luteinizing hormone (LH) a few hours earlier. This spike in hormone levels is called the LH peak. The days around ovulation offer the highest chance of conception. With the Expect LH test, the time of follicle rupture can be determined with hour accuracy depending on the number of measurements (with daily two measurements, accuracy is within 6 hours). This can be used for both contraception and increasing the likelihood of conception. It can confirm the success of treatments that stimulate follicle development. By choosing the timing of intercourse, the probability of the child's gender can be influenced. We do not recommend it for this purpose. The box contains 4 tests. Urine samples should be taken between 10 in the morning and 8 in the evening, and wait approximately 5 minutes for the evaluation.