Sources: NFL concludes Peyton Manning didn't use HGH

— -- After a seven-month investigation, the NFL has determined that Peyton Manning did not use HGH or any other performance-enhancing drug banned under the league's policy, according to sources close to the investigation.

Before its final determination, the NFL interviewed Manning and his wife Ashley, who were said to be fully cooperative during the process, according to sources.

The league also sought and received medical records pertinent to the case and, after reviewing them and the interviews, determined there wasn't any evidence that any violation had occurred, sources said.