<prompt> Translate the following text to EnglishHii ni kwa sababu kuna watu wengi ambao wanashindwa kupata matokeo mazuri, na kwa hivyo, kwa sababu ya mfano mzuri wa majaribio ya madawa ya kulevya, ni muhimu kuwa na chombo cha kitaalam cha uchunguzi wa madawa ya kulevya.  <response>: but uh they say that there its almost down to zero where people come back and say they are positive and and theyre not you know in other words theres very few mistakes and that of course has got to be critical its got to be if you have a drug testing program its got to be with a very very good agency you dont just have you know some local uh group do it its got to be a a a highly qualified agency 