After I did so here and bad reviews and read the tests were always negative with me, I came up with the time but to ponder whether they are reliable or not. But the displayed result was always right. Was one of the tests appears quite weak, second line, I was even a day or two before the due date. By the by, I can not confirm that they are crap. For me it worked perfectly! Hab for security on the day it made a second, in which the second line was then a bit more clearly. And out of curiosity to see if only relatively weak lines are shown, I have a week later made a third ;-) Since the second line was just as intense as the control line. By the by, I assume, that the line is just more or less depending on the concentration of the hormone pronounced.
For me there for these tests a strong buy recommendation! I would buy them again at any time.