The FIRST RESPONSE® Easy-Read Ovulation Test is over 99% accurate in laboratory studies in detecting the luteinizing hormone (LH) surge in your urine. The LH surge indicates when you're most fertile and likely to conceive. Each FIRST RESPONSE® Easy-Read Ovulation Test Kit contains seven testing sticks for a full week of testing. The FIRST RESPONSE® Easy-Read Ovulation Test makes it easy to identify your LH surge. Detecting your LH surge is now even easier — by helping you determine your peak fertility days, you can count on FIRST RESPONSE® to help you get pregnant sooner.