DENVER — The NFL said it is conducting a comprehensive review of allegations that Broncos quarterback Peyton Manning had human growth hormone delivered to his house.

There’s no timetable to complete the investigation, but it is not expected before the Broncos play the Panthers in the Super Bowl on Feb. 7.

League spokesman Brian McCarthy said the inquiry, which began weeks ago, involves
reviews of records, interviews and coordination with other agencies.

Al Jazeera reported last month that an intern at an Indianapolis anti-aging clinic was secretly recorded suggesting that Manning’s wife received deliveries of HGH, which is banned by the league. Manning, then with the Colts, was rehabbing from shoulder surgeries.

The intern, Charles Sly, has since recanted his story.

Manning angrily denied using performance-enhancing substances and called the report “complete garbage.”

The NFL reportedly will conduct an independent probe, rather than joining forces with Major League Baseball. MLB has teamed with the U.S. Anti-Doping Agency to investigate the veracity of the Al Jazeera report, which also named NL stars Ryan Howard and Ryan Zimmerman.