The First Response ovulation prediction kit is a test which can tell you which day is the best for you to try to conceive. To read the result simply look at the color in center of the test well. If it is white or a very pale pink, you have not yet had to LH surge which predicts that ovulation will occur within 20-44 hours. However, if the center of the test well is a darker pink (this can be measured against the color in the package insert>, then the LH surge has been detected and that day is the most fertile day of that particular month for you. As soon as the LH surge has been detected, there is no more need to use the First Response test kit that month.
If previous test days have shown a white color in the test well and you get a pale pink color the next day, this may also be an indication of the LH surge. It simply means you have a low LH surge. That day will be your most fertile.
Some medications may interfere with the test results for the First Response kit. One of these medications is Pergonal for injection, and another is Danocrine or danazol. Clomiphene citrate (Clomid) can be used without affecting the results if you begin testing on the second day after your last dose of Clomid each month.
Some medical conditions may also affect the results. The beginning or ending of menopause in some women may cause inaccurate test results. Current pregnancy will give a positive result even though you are not going to ovulate once you are pregnant. Also some women do not ovulate every cycle. There will be no increase in LH during a nonovulatory cycle and, hence, there will be no color change when using the test kit.
If you do not get a color change after several months of testing, you should see a physician or call the company for assistance. Also, if you have any questions about the test or its results, you can write to the company or call them. Some answers to commonly asked questions are also provided in the leaflet accompanying the test kit.