How do we know if the Wilson BLX six one tour is fake?

i just got my blx yesterday and i watch every space of the racket . . . i see that it is in good shape. My uncle bought the racket from amazon.com and i just hope its legitimate. i'm scared because i bought a babolat AeroPro Drive GT plus from a guy who plays at the tennis court. My friend said it was fake. I checked the internet and it was FAKE!!! so every time i get a new racket, i always fell nervous for the possibility of it being fake. . . . does anyone know the things we should watch out for to know if its fake or not???