If its the test 500 from zaralone i think it could be a hit or miss, i am running it at the moment and seems good to me running it with deca so i would of thought if it was bunk i would feel the effects of no test but seems to be legit, though some people online report they get nothing from it so could be inconsistency on zaralone's behalf. Have mild pip from it for one day after but then again ive never had pip from anything before including blend of prop and tren ace in it so maybe that says something, only way to find out if its good tho is to give it a bash a suppose