I know this is an older thread, but just wanted to input my opinion. I used three of these, and got my BFP. Results show up quickly. I am not sure of my conception date, but had implantation bleeding on the 8th, took a test the next morning and there was a very faint line, I thought it was an evap because it was so faint. After not getting AF the 10th, when it was due, I took another one on the 11th, and after about a minute, could see a line! Today I took another, just to see the progression and the test line started coming up before the control line was even visible. When you drop the pee into the sample area with the pipette, it takes a second for the red dye to start moving across the window. The whole window will turn pinkish, and will start to dry. When it begins to fade, you'll see the control line and hopefully for those TTC, the test line.
Here's my test from today.