I did the test and all was fine as far as temp goes but I'm freaking out about the fact that it's a GC/MS test!

Can anyone tell me if synthetic is all good for the GC/MS test and if anyone has used agent X!!

Youre freaking out over nothing. The GC/MS is only used to confirm drug positives that occur on the initial assay screen. Synthetic urines contain no drugs to test positive for.