Purdue Research Projects Halted Amid Allegations of Misconduct

Allegations of misconduct have led to the suspension of multiple research projects at Purdue University, raising serious concerns about the integrity of animal research conducted at the institution. Internal complaints filed in late 2025 pointed to various violations, including failure to maintain an aseptic environment, inadequate personal protective equipment, use of unapproved drugs, and falsification of laboratory documents.

The complaints were brought to light by the animal rights organization Stop Animal Exploitation Now (SAEN), which obtained letters sent to the National Institute of Health (NIH) through a Freedom of Information Act request. Michael Budkie, executive director of SAEN, emphasized the gravity of the situation, stating, “They were not following protocol… and the Institutional Animal Care and Use Committee requires that the protocol is followed to the letter.” He further asserted that any potential scientific contributions from these studies are now severely compromised.

In October 2025, one of the affected experiments, titled “Examination of behavioral and neural outcomes associated with drugs of abuse and neurodegenerative diseases,” was initially suspended due to violations of safety protocols. The Office of Research informed the NIH that lab members had not properly utilized personal protective equipment, failed to maintain an aseptic environment, and did not apply correct suturing techniques to prevent catheter dislodgment. A university spokesperson, Trevor Peters, confirmed the suspension but asserted that all procedures adhered to approved guidelines. “The matter was resolved promptly, and the protocol was reinstated without further concerns,” Peters stated via email.

Despite the reinstatement, another experiment, “High-throughput deep tissue in vivo imaging,” faced a permanent suspension in December 2025 following a unanimous vote by the Institutional Animal Care and Use Committee (IACUC). This decision stemmed from serious breaches, including improper housing of lab mice, failure to humanely euthanize a wounded mouse, and the use of unauthorized over-the-counter drugs on laboratory animals without veterinary consultation.

The lab member implicated in these violations received an indefinite suspension after reportedly treating the mouse’s wound without consulting a veterinarian, which allegedly caused significant pain to the animal. Documents revealed that the individual applied surgical glue to the unclosed wound instead of following established humane euthanasia practices.

The allegations also included claims of document falsification. A letter to the NIH highlighted discrepancies in logs regarding animal health, suggesting that records were manipulated to misrepresent treatment dates and times. These actions, if left unaddressed, could jeopardize Purdue’s accreditation from the Association for Assessment and Accreditation of Laboratory Animal Care, further complicating the university’s standing in the research community.

Budkie noted that SAEN receives approximately 1,000 lab complaints annually, with 50 to 100 of those warranting suspension. He remarked that fewer than 10 involve document falsification, indicating the severity of the Purdue situation. The ongoing investigation into research misconduct under Purdue’s Ethics Policy III.A.2 could have lasting ramifications for those involved, potentially leading to permanent disqualification from federally funded research.

“The Federal Office of Research Integrity (at NIH) can bar guilty parties from participating in federally funded research,” Budkie explained. As many academic institutions rely on federal funding for a substantial portion of their research, individuals implicated in misconduct may struggle to find future opportunities in academia.

In response to the incidents, remaining staff members not facing suspension will be required to undergo retraining on IACUC policies. Despite these measures, Budkie expressed concern about the implications of suspending two protocols within a year at a relatively smaller institution. He noted, “For a comparatively smaller institution to have to suspend two protocols apparently within a year, that’s highly unusual.”

Peters reiterated Purdue’s commitment to responsible research practices, emphasizing the importance of animal safety and adherence to regulations. “Purdue remains fully committed to maintaining complete compliance with all animal care and use regulations and to sustaining transparent, proactive communication with institutional oversight committees,” he stated.

The university continues to face scrutiny as it navigates the repercussions of these allegations, which not only affect the institution’s reputation but also the ethical standards upheld in the realm of animal research.