How to differntiate?

[hexamine]

I got a vial of NPP yesterday, now how do i know that its NPP and not Testosterone propionate??? As both of them have the same half life and both kick in within 24hours time period...

[AlphaMaleDawg]

does it not say on the label? Sounds like you don't trust your source

[Sector]

You should be able to tell the difference because you should have run a cycle of Test only before ( im assuming you have? ). Test is Test, so any additional strength gains or sides or size you gain this cycle that you didnt have in a previous test only cycle, I would attribute to the NPP.