"The positive result was triggered by elevated levels of testosterone in Braun's system, the sources told "Outside the Lines." A subsequent, more comprehensive test revealed the testosterone was synthetic -- not produced by Braun's body."
http://espn.go.com/espn/otl/story/_/id/7338271/ryan-braun-milwaukee-brewers-tests-positive-performance-enhancing-drug"In April, Braun signed a five-year contract extension worth $105 million. He then went out and had his best season ever, carrying the Brewers to their first division title in nearly three decades. He led the league in slugging percentage at .597, with a .332 batting average, 33 home runs, 111 runs batted in, 109 runs scored and 33 stolen bases."
the choices for his excuses are:
1. An over the counter supplement that was tainted.
2. A candy bar that was contaminated.
3. Cold medicine?
4. He accidentally took his wife's birth control.
as silly as these sounds these are the common excuses used.