I did a little search on the Ace-It synthetic and found it to be another Quick Fix clone. Any synthetic batch would pass all types of drug tests, including the GC/MS, because they contain no drugs to test positive for (or at least theyre not supposed to!). But when the sample faces the validity checks, there is cause for concern.

Was the synthetic batch made by a reputable manufacturer?

Is the synthetic batch expired?

Was the synthetic batch ever exposed at any time to direct sunlight? (a no-no)

These are the kind of questions that should come to mind when dealing with clones of the QF. Perhaps to overcome these concerns, you could always test the synthetic batch at home to ensure that the creatinine, pH, and specific gravity are all within acceptable ranges. Google search for drug adulteration test kits.

Do these people not catch on that subbers always have the exact same creatine levels and so forth? Or are they not always the same with synthetic?
Through the testing of numerous QF batches over the years, I discovered that the readings do vary from batch to batch.