Since about 1980, it has been possible to perform adequate biopsies on adults during an upper endoscopy, relegating the Crosby capsule to use mainly in children.

Formol saline fixed, paraffin embedded Crosby capsule jejunal biopsy specimens were collected by reviewing the archives of the Royal Infirmary Pathology Department over a five year period.

The Crosby-Kugler capsule, also called the Crosby capsule, is a device used for obtaining biopsies of small bowel mucosa, necessary for the diagnosis of various small bowel diseases.