New Orleans Saints veterans Deuce McAllister and Will Smith reportedly are among several players who have violated the NFL steroids policy.
Fox 31 television in Denver, citing an unnamed source, reported Friday there are between six and 10 positive tests in the NFL for a weight-loss diuretic. The only names the station mentioned were the two Saints, who are in London for Sunday's game with the San Diego Chargers.
Houston TV station KRIV later reported Texans long snapper Bryan Pittman also tested positive and would appeal.
ESPN.com, citing two unnamed sources, reported the number is more than 10 and may exceed 15.
The NFL would not comment on the reports, but attorney David Cornwell told the Associated Press he has been hired to handle the appeals of a number of players who are facing possible suspensions.
Cornwell declined to identify any of his clients or say how many there were.