well, a posted in another forum who works in lab testing stated they do not automatically go to the lab for gc/ms if negative dilute - negative is negative, and is not "confirmed" negative.

besides, this emp. stated to me that only positive tests go to gc/ms.

i would throw a fit if a negative dilute went to gc/ms, because no one informed me of that.

but, hopefully i am worrying for nothing

have you come across anyone here who went top gc/ms for a (-) dilute?