insteresting info
http://www.thinkmuscle.com/ARTICLES/...drug-tests.htm
The working group, which consisted of Professor Ron Maughan, Professor Eric Newsholme, Professor Clyde Williams and Professor Ed Hillhouse, undertook an experiment which, it said, demonstrated "an urgent need for a full investigation of the factors that can give rise to positive nandrolone tests in athletes."
The test involved three athletes who had been reported as positive for the drug and three healthy volunteers. Over a seven-day period, the athletes trained but did not take supplements and submitted urine samples for analysis, which all proved negative or "at the low end of the normal range." However, when two of the athletes started to take the supplements they had taken prior to their positive tests, one of them returned levels of nandrolone consistently above 10ng/ml, which represents a level five times the legal limit for males.
When the three healthy volunteers were given the same supplements, as were used by the athlete who returned a positive result in the experiment, only the subject who was training was found to be positive. This volunteer's urine recorded a level in excess of 10ng/ml on the second day.
In a statement, the working party declared: "From these preliminary results, we conclude that a combination of exercise and dietary supplements, none of which appears to contain a prohibited substance, can result in a positive nandrolone finding."