How much ectsasy would have to be taken to fail the cut of levels in a hair follicle test? I ingested 1 tab of low quality ecstasy 3-30-2012 and will be submitting a hair follicle test on 4-9-2012. I know there is a chance it won't be high enough above the scalp to detect, but I have heard that low, infrequent, and recent usage is not detected reliably. So how many "mg" would have to be ingested to reach the 300 PG cutoff level.