Roger H. Unger (March 7, 1924 – August 22, 2020) was an American physician known for his studies of the physiology of pancreatic islets.
He was the Touchstone/West Distinguished Chair in Diabetes Research at University of Texas Southwestern Medical Center.
In 1951, he joined the US Public Health Service, where he directed a diabetes detection drive.
[1] He turned his attention first to glucagon, then a protein of unknown function known to be secreted by pancreatic islets.
With the help of Solomon Berson's lab, Unger's group developed a radioimmunoassay for measuring glucagon levels, which they published in 1959.