update: PASSED, I have been a member of the sub club for some years now but this was by far the most nerve racking subs I've ever done, only because of the reviews I've read and there is no batch # or born on date or any info on which batch you got. so to sum it up im not saying ill use synthetix5 again however, if you are in a pinch it worked for me and may work for you (if nothing else is available. because its the same price as quick fix and urine luck. from my experience's those two are tryed and true company's, ive done many successful subs with both only one with synthetix5)