If ovulation monitoring is done using ovulation test strips, it is possible that a strong positive result may not be detected clinically if the urine specimen retained is morning urine. This is because ovulation test strips detect the value of luteinizing hormone in the urine, and the concentration of luteinizing hormone is higher in the urine around 10 o’clock in the morning. So if you want to use ovulation test strips to monitor ovulation, the urine specimen to be retained is the urine at around 10 o’clock in the morning, so that a positive result will be detected in the clinic. If you use morning urine to do the test specimen of ovulation test paper may not detect ovulation, it will always show a weak positive result, so you must pay attention to the urine specimen, it is recommended to use the ovulation test paper to give a test immediately after the urine specimen is retained.