99% accurate at detecting the LH surge. Easy to use - just one simple step. Predicts your two most fertile days. No more guessing. CVS Health pharmacist recommended. 1 month supply. Why test for an LH surge? Immediately before ovulation, the body produces a large amount of luteinizing hormone (LH). This LH surge will tell your two most fertile days that pregnancy is most likely to occur. Yes (LH Surge): The presence of two purple colored lines where the test line is the same color or darker than the control line, indicates you have detected an LH surge. No (LH Surge): The presence of one control line or two lines where the test line is lighter than the control line, indicates you have not detected an LH surge. Place the dipping end of the test strip in urine for 10-15 seconds. Do not pass max fill line. Your LH Surge: Your two most fertile days begin with the start of your LH surge. The presence of two similar purple lines indicates that the Daily Ovulation Predictor has detected your LH surge. The CVS Health Daily Ovulation Predictor is a simple way to determine when you will be ovulating 24-36 hours in advance and increase your chances of becoming pregnant. A one month supply of 20 test strips takes the guesswork out of finding your two most fertile days. You can begin testing the day after the end of your period, then test daily for the next 20 days. Easy to use - Just 1 simple step. Test results in 4 minutes. Easy to read. Test daily - 20 test strips to track your cycle and LH surge. Made in China. Packaged in the USA.

This item is FSA (Flexible Spending Account) eligible.

1 Vial With 20 Test Strips, 1 Cup and 1 English/Spanish Instruction Insert.

For in vitro diagnostic use. Not for internal use. Store at 36 degrees F - 86 degrees F (2 degrees C - 30 degrees C). Do not freeze. Not for contraceptive use.

Keep out of reach of children.