What does that article have to do with Jon Jones?
Semi-rambling post follows. You have been warned.
Jones tested positive for a steroid that isn't just banned by WADA, it has no approved use. The only places that make it are doing so illegally, and probably aren't run by the real world version of Walter White.
One of the arguments for Jones's positive coming from a contaminated supplement is that he'd be an idiot the take turinabol close to the fight. This is correct, but misleading. Turinabol wouldn't help him at all taken for a very short time immediately before a fight. But there are at least three problems with this, one of which is covered by the article.
One, Jones' positive came when he was dehydrated, just after the weight cut. So his urine would have been much more concentrated, and the metabolites/markers would be easier to detect. This could lead old samples being "clean", only because the markers weren't concentrated enough to show.
Two, the other samples may not have been tested for turinabol, or may have been done in a leave with less sensitive equipment. Again, this would make them "clean" simply due to detection limits.
The third issue, which the article refers to, is that turinabol isn't being made in a lab run by Merck, or Pfizer, or other large, well equipped outfits. It's being made in black market labs. Jones got bit by this before, assuming you accept the dick pills excuse. An lab running on the sly isn't going to have all the inspections and standards that a proper one will. Quality control is going to be questionable. Equipment won't get cleaned, or won't get cleaned thoroughly. And so you'll have cross contamination between runs of different drugs or supplements. So maybe Jones took some form of test or another prohibited substance that should clear his system in days or hours, but the turinabol that contaminated it is detectable for months. But we know it wasn't from a mass market, legit product, because there wouldn't be any turinabol in those labs to contaminate the product - it simply wouldn't be made there. The older samples were clean, because they were clean. The fight sample was dirty because Jones took something sketchy or outright banned just before the fight, which was contaminated with something else. Turinabol. The article refers to contamination with nandrolone, which nobody with any sense who gets tested would take, but the same logic applies.
Written on my phone. I'll be correcting wording for a while most likely, so if something looks like I was drink when I wrote it, that's only part of the reason.
