I haven't had much luck with these from the beginning- the IC one step tests. Even when I had a really clear Frer they didn't show. I am now 5weeks1day and keen to see further progression. However it still isn't as dark as the control? I took a different test to compare and there is clearly a very strong line on the other One? Considering these are meant to be the most sensitive I am very disappointed in them? It has also given me some doubt about how this is progressing.....