Tips for Using OPKs

• Figure out the best time of the month to test. To do this, take the number of days in your shortest cycle and count backwards by 14 to 16 days. That is the day to start testing.
• Test between noon and 8 PM. Do not use first morning urine.
• Do not test after drinking large amounts of liquid; hydration can affect the results.
• Once you get a positive test, there is no need to retest.
• Women with PCOS often get false positives. If you suspect that there is a problem, contact your doctor.
• Women who have irregular cycles or plan to use ovulation testing long-term for birth control may want to consider investing in a computerized monitor, which tends to be easier to interpret and may save money in the long run.