Under the regulations set by DHHS, a "non-human" sample is ruled when the creatinine level is between 0 - 2 mg/dL. Synthetic urine batches such as the Quick Fix, when stored properly and not expired, will pass the creatinine checks as well as the pH, specific gravity, etc.

I place no credence on info told by individuals who are in to advertize their product. Their pitches are almost always reeked with misinformation.