1. First you must determine the length of your menstrual cycle. This is the number of days from the first day of your menstrual bleeding to the day before your next
bleeding begins again.
2. Please refer to the chart to determine when you should start testing.
3. If your cycle is shorter than 21 days or longer than 38 days, consult your doctor.
4. If you do not know your cycle length, you may begin the test 12 days after your first period since the average cycle length is 28 days. Perform 1 test each day over a 5 day period or until the LH surge has been detected.
Smilereader lets you know the best time to take your test. Once you have entered your last menstrual cycle dates, the app will calculate the best time to start ovulation testing.