Q: Which time of day is best to test?

A: It's generally suggested that you do not use your first morning urine. Instead, you should collect your urine after your first morning urine, maybe between 10 a.m. and 8 p.m. You should try to collect the urine about the same time each day. About 2 hours before collecting your urine, you may want to drink less, because a diluted urine sample can prevent the test from detecting the LH surge. Some doctors suggest testing every 12 hours so you won't miss the LH surge.