Robert F. Schilling

Schilling received his medical degree from the University of Wisconsin-Madison in Madison, Wisconsin. He received postdoctoral training at Philadelphia General Hospital in West Philadelphia, Boston City Hospital in Boston, and at University of Wisconsin Hospital in Madison, Wisconsin.

His work on detection of radio-cobalt-labeled B₁₂ in the urine led to a test for vitamin B₁₂ absorption named the "Schilling test" in his honor. The Schilling test determines if a patient has pernicious anemia, a disease caused by malabsorption of B₁₂ due to lack of intrinsic factor. The Schilling test in a second stage may also be used as a control test for other causes of malabsorption of Vitamin B₁₂ even if it is bound to intrinsic factor (B₁₂ deficiency which is not pernicious anemia).