Yeah, them blue ones. ANy #s on packaging thats imprinted into box/lable, not printed is likely not fake.
They make so much packaging up that its imprint dated as used.
But, a UG or top quality lab in a developing country may not do that. Need to know your product.
Real Organon or Schering or any major Intnl Pharma's stuff will normaly be imprinted. You can feel it.
If thats stuff's fake, they went to a lot of trouble. Theres much higher profit margin stuff to fake than test.
Test labled Deca, HCG labled HGH, Dbol as Var... get the picture?