I dont know, I've never seen them before, but they are packaged like lab/dr's office tests, which means that they are more then likely way more sensitive then your others (not all the time, but most of the time) and that you are getting real lines, but do the FMU/SMU and water test. Some ladies have better luck with FMU, personally my SMU and evening urine is much better for testing then FMU. So, maybe that could help you, I don't know.... Good Luck! Can you post pics of the tests you have taken, even the neg ones and what the brands are please?