Ovulation test paper measured a bar, that is, negative results, generally suggests that the patient is not in the ovulation period or follicle has ruptured. Ovulation test paper mainly through the detection of luteinizing hormone peak levels, predict whether ovulation, can be used to qualitatively detect luteinizing hormone in human urine, so as to determine the time of ovulation and women’s menstrual cycle in the “safe period”, to achieve the selection of a better time to conceive or the use of “safe period The purpose of using “safe period” is to choose a better time to conceive or to use “safe period” as a contraceptive. Generally speaking, the appearance of a red band, that is, the control line shows color, the detection line does not show color, indicating that there is no ovulation, pregnant women may not be easy to conceive at this time of intercourse. If the follicle ruptures, the egg has been discharged, ovulation test paper can also be measured with a bar, the woman can be accompanied by pain in the lower abdomen at the same time, within 24 hours of intercourse with a higher chance of pregnancy. The egg can survive for up to 24 hours after it is discharged, and it can take up to six hours for sperm to reach the fallopian tubes after intercourse, giving the sperm and egg a chance to combine. If you are planning to get pregnant, you need to have intercourse within 24 hours of the follicle bursting. In addition, not every woman ovulates in the middle of her menstrual period, so a positive result may not occur during the 6-day test. Changes in the color of the test line during the test should be observed and documented. A negative test result, but one in which the color of the test line begins to decrease, can be taken as a peak LH level. Urine that is too dilute results in a low LH concentration, which is not representative, so it is not advisable to drink too much water or other beverages before the test. Do not allow the test strip to become wet or touch the reaction membrane before using the test strip, and tighten the lid of the can immediately after removing the test strip from the can. Do not take hormonal drugs that may affect the test results before the test to ensure accurate results.