Whether it is an ovulation test or an early pregnancy test, the presence of a bar means it is negative. A single bar on the ovulation test indicates that ovulation has not yet occurred or that ovulation has passed. A single bar on the early pregnancy test indicates that you are not pregnant or that you are pregnant but not detected because the test is too early. It is recommended to re-monitor the test three to five days apart. Both ovulation test strips and early pregnancy test strips can be used to determine whether ovulation or pregnancy has occurred by detecting the relevant hormones in the urine. In order to reflect the authenticity of the test results, it is recommended that you do not drink a lot of water about two hours before the test to avoid dilution of the urine to affect the normal test results. Do not take hormonal medications before the test that may affect the hormone levels in your body and cause a false positive test result. The test strips used for the test should be used within the validity period and should be used in a regulated manner to avoid false positives.