Color crosstalk between the early pregnancy test and ovulation test may be due to the use of the same cup of urine as the reagent or the placement of the two together after measurement, resulting in the failure or contamination of the testing reagent, at which point the result is inaccurate and not clinically meaningful. In general, there are two types of early pregnancy test results. If a color band appears in the control area of the test strip, it generally indicates that no conception has occurred. If there is a clear band in the test area, it is positive and indicates that the test tester is pregnant. The use of early pregnancy test strips has the advantages of being fast, convenient, sensitive and specific, and can avoid cross-reactivity with other glycoprotein hormones that have a similar structure to hCG. However, women who self-test for early pregnancy must be clear that the early pregnancy test can only be used as a primary screening test and does not strictly confirm that conception has occurred. A woman’s body experiences a peak of luteinizing hormone just before ovulation, and ovulation test strips are used to predict whether ovulation has occurred by monitoring the peak of luteinizing hormone in the urine. If the test is positive, it means that ovulation will occur within 1-2 days. Generally, morning urine is recommended for early pregnancy test, while ovulation test is not recommended for morning urine, urine within a day is fine, and it is recommended to test 1 week after the end of menstruation. After purchasing early pregnancy test strips and ovulation test strips, make sure to pay attention to the expiration date and keep them in a cool and dry place to ensure the correct testing method and avoid the situation of test strips stringing colors.