Patriots wide receiver Julian Edelman has acknowledged he is facing a four-game suspension under the NFL’s policy on performance-enhancing substances, but he also said he doesn’t know what happened. It appears the league’s drug testing experts aren’t completely sure what happened either.
According to Albert Breer of SI.com, Edelman’s result was triggered by a substance that wasn’t immediately recognizable, and the drug testers are still analyzing it.
The story said it's not unprecedented for drug testers to need time to determine what substance a player took. It also said Edelman’s test took place a couple months ago, during the offseason. That means that whatever substance he tested positive for, it wasn’t a stimulant like Adderall. Use of stimulants in the regular season is considered a performance-enhancing substance issue, but during the offseason it’s considered a substance abuse issue.