YA HAVE TO WATCH FOR FAKES.. there are a lot of them coming out of tj.. i posted this before but, will do it again..1) if the exp date and lot # is the same font as the label, it is a fake.. the lot and exp date should be "typed" on the label in black ink..2) the labels should be rounded at the edges...3) the hologram will not have the complete word on it.. just parts of the secure word.. qv is good stuff but, can be painful.. just dillute it with sterile oil and all is fine.. that being said, the best test out there is euro test (sust, enth and the like) from euro humasn grade.. but, that is very expensive.. test is test.. as long as it is dosed correctly all will be fine..