Is it normal for the LH to be visible on OPKs for a week straight? I know they’re only positive when the first line is as dark or darker than the control line so my peak was Friday 31st July, but is it normal for the test line to be so visible for this amount of time? I thought the LH drops dramatically after the peak so wouldn’t have thought there would even be a line visible today? I only tested out of curiosity as this is my first month using OPKs so I want to get a general picture of what’s going on