Tony Waldrop, vice chancellor for research and graduate studies, said UNC received a letter from the NIH last week that calls for the University to review its animal care and use program.
The letter does not call for any specific changes but does request that UNC's Animal Care and Use Committee submit the results of the investigation by Aug. 2.
UNC was accused of mistreatment of lab animals after a PETA undercover investigator working in the University's labs released videotape of the alleged violations in April.
The video, shot by PETA undercover investigator Kate Turlington, shows researchers decapitating mice with scissors and footage of Turlington finding live mice feeding on a dead mouse.
UNC officials met with NIH representatives to discuss plans to investigate the allegations soon after the video was released. UNC officials also set up internal committees to look into the allegations.
One researcher was stripped of the right to use animals in experiments. The researcher's animal-testing rights have since been reinstated.
The Institutional Animal Care and Use Committee, an organization that ensures the University remains in accordance with the policies and regulations instituted by the Public Health Service, has spent nearly 1,200 hours reviewing the tapes and examining all aspects of the charges made by PETA.
The Office of Laboratory Animal Welfare, a division of the Public Health Service, has instructed the IACUC to inform it of the results of its investigations after reviewing UNC's animal care and use program.
The Office of Laboratory Animal Welfare recommended that the IACUC investigation include a full review of the institutional policies and practices related to the alleged violations, as well as interviews with current and former staff involved in the use of laboratory animals.