I bought some dollar store stick test that took over 10 minutes for the urine to even flow across. I pretty much tossed the test after about 10 min because there was no line on test at all. Not even the control line. Came back later on probably about an hour later and noticed the control line was now there and a faint line on the test as well. I had 2 test do this. I know I'll test again but was wondering if this has happened to anyone else.