She was a postdoctoral fellow and then a resident in anatomic pathology at the University of Washington.
She completed a fellowship in pulmonary pathology at the University of British Columbia as a Parker B. Francis Fellow.
[2] In 1983 Crouch joined the Washington University in St. Louis faculty, and as of 2024 she is the Carol B. and Jerome T. Loeb Professor of Medical Education.
[3] Crouch is known for her research in collectins, a carbohydrate binding protein that is involved in the immune system.
[4] She identified CP4, a novel secreted collagenous protein,[5] and went on to determine its molecular structure.