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Gerold Grodsky, a retired professor of biochemistry, biophysics and medicine at the University of California, San Francisco, died Dec. 29, 2022 in San Francisco. He was 95, and he had been a member of the Â鶹´«Ã½É«ÇéƬ and Â鶹´«Ã½É«ÇéƬ Biology since 1961.

Gerold Grodsky

A native of St. Louis, Missouri, Grodsky was born Jan. 18, 1927. His father ran a soft-drink bottling business, which, according to a , sparked Grodsky’s early interest in chemistry.

At 17, he headed for the University of Illinois where he joined naval officer training. He graduated summa cum laude in chemistry as a Navy ensign and also earned a master's degree at the U of I.  He received his Ph.D. in biochemistry at the University of California, Berkeley, where he met Kayla Deane Wolfe. They married and were together for 50 years until her death in 2003.

As a postdoctoral fellow at Cambridge University, Grodsky grew interested in diabetes research. He studied bilirubin metabolism for two years as a researcher at the University of California, San Francisco, and then joined the school’s metabolic unit, later known as the UCSF Diabetes Center. There, he pivoted to the study of insulin.

In the 1960s, Grodsky developed the first precipitating radio immunoassay for insulin, which enabled accurate measurement of insulin in biological fluids and tissues. His studies pioneered description of the fast and slow phases of insulin release and the hypothesis that insulin is stored in compartments of differing availability. His work on rapid insulin release helped inform algorithms for the artificial pancreas, faster-acting beta-cell stimulants, and fast-absorbing insulin preparations.

Grodsky was founding editor of two diabetes journals. He received the Rumbough Science Award from the Juvenile Diabetes Research Foundation, the Paul Lacy Memorial Lecture Award from the International Pancreas and Islet Transplant Association and UCSF's Lifetime Achievement Award. In 1993, the Juvenile Diabetes Research Foundation established the Gerold and Kayla Grodsky Basic Research Scientist Award. In 2010, UCSF created the Gerold Grodsky, Ph.D. Chair in Diabetes Research.

Grodsky retired in 1990 but continued consulting at the UCSF Diabetes Center. He had a host of hobbies; he collected antique black powder rifles and enjoyed sailing, tennis and fishing trips with family.

Grodsky’s daughter Jamie died in 2010. He is survived by his companion, Roberta Sherman; daughter Andrea Huber and her husband; four grandchildren; and two great-grandchildren.