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Two longtime ARUP Laboratories officials began new responsibilities Friday as president and CEO of the organization.

SALT LAKE CITY — Two longtime ARUP Laboratories officials began new responsibilities Friday as president and CEO of the organization.

Dr. Sherrie Perkins and Andrew Theurer were named CEO and president, respectively, via a prepared written announcement from the organization.

The two replace Dr. Edgar Braendle, who had served in both roles for the past year.

"Dr. Braendle has decided to step down in order to pursue new opportunities and rejoin his family in New Jersey," ARUP spokeswoman Peta Owens-Liston said in a statement.

Owens-Liston confirmed to the Deseret News that Braendle opted to resign of his own accord. Braendle didn't immediately return a call requesting comment.

Braendle will continue to serve until Aug. 18 "to help ensure a smooth transition," according to an email sent to faculty by U. President David Pershing; University of Utah Health CEO, interim senior vice president for health sciences Dr. A. Lorris Betz; and Dr. Peter Jensen, chairman of the board of directors for ARUP Laboratories.

"Dr. Braendle's commitment to the mission of ARUP and University of Utah Health has made a lasting impact, and we wish him the best as he turns his attention to new interests on the East Coast," the three men wrote. "During Dr. Braendle's tenure, the growth of ARUP exceeded industry standards. He successfully oversaw many key initiatives and brought a valuable perspective in personalized medicine and genomics."

The leaders' email also cited family considerations as contributing to Braendle's decision.

Perkins has been serving ARUP as senior vice president of research and development, as well as division chief of clinical pathology. She is also a vice chairwoman and professor in that division.

“For more than 25 years I’ve been a part of this company, and during that time I’ve become deeply committed to the people and company mission that have made ARUP what it is today," Perkins said in a statement.

Theurer has been working as senior vice president and chief financial officer at ARUP, with "extensive experience with all aspects related to ARUP's business enterprise," Owens-Liston said.

“I’ve seen ARUP grow to become one the country’s largest and most respected national-reference laboratories, and I am incredibly proud to be a part its leadership,” Theurer said in a statement.

ARUP is a nonprofit medical reference laboratory, spearheaded by the U.'s Department of Pathology, and employs about 3,500 people. The organization conducts more than 3,000 types of tests for hospitals across the country and examines around 50,000 patient specimens per day.