Fightlinker kills it:
There, of 621 competitors tested after competition, only five produced results where their nandrolone levels exceeded 0.1 nanograms per millilitre of urine (ng/ml).All five were women. The levels in women are marginally higher, as a result of a different hormonal make-up and use of the contraceptive pill. But the levels are still minimal. Nobody in the Nagano tests exceeded 0.4ng/ml.
This just served to confirm the IOC's cut-off levels - a doping-control speed limit, where anything above 2ng/ml in men or 5ng/ml in women is regarded as an offence. Basic arithmetic suggests that the IOC scientists have set themselves a generous margin for error - 2ng/ml being 20 times what might be regarded as a "normal" level of nandrolone in men.
So there you go. No Dana, the average person doesn't walk around with 6ng. He doesn't even walk around with 2ng. The average person walks around with less than half a nanogram of Nandrolone (try saying that five times fast). And the limit was based on tests against Olympic athletes, people just as dedicated if not more to their exercise routine than Sean Sherk.
Translation: in order for Sherk to be innocent, his endocrine system has to defy the known universe of human biology. That's a bitter pill to swallow.