Why use "David" ovulation tests?
Use ovulation prediction kits (OPK) to figure out your fertile window. Simply dip the test strip into urine to see if there has been a surge in the level of luteinizing hormone (LH). Once this LH surge has been detected, you should release a fertile egg within 24-48 hours. "David" ovulation test kits are very affordable way of helping you to conceive!





How to interpret the result?
* POSITIVE: Two lines are visible and the Test band (T) is equal to or darker than the Control band (C). This indicates that you will probably ovulate within 24-36 hours.
* NEGATIVE: Only one color bands appear on the Control band (C). Or the Test band (T) is lighter than Control band (C). This indicates that no LH surge has been detected and you should continue daily testing.
* INVALID: No band appears in the Control band (C) region. Insufficient specimen volume or incorrect procedural techniques are the most likely reasons for an invalid result.