I have done alot of research on these very kits,and am in the process of purchasing some now.I have cumunicated with others who have used them and had good results.Thats not to say there are not any fakes out there.My guy offers these kits with a money back guarentee,and also lab test results.I decided to give them a try.Also you can check lot #s on serono wed site to see if they are legit.