Ovulation predictor kits detect 25mIU LH in urine.nGreater than 98% accuracy.nEasy to use - simply point test device into urine stream.nQuick results in 5 minutes.nTest any time of day.nThe LH Ovulation test is ideal for determining perfect time to conceive by timing your ovulation. To collect the sample simply point the device into the urine stream and read the results in 5 minutes. Negative results appear as a single line and positive results appear as 2 distinct lines. This package contains 10 midstream tests.