Table 1

 Duodenal enzyme outputs

InterdigestiveEarly/maximal postprandialLate/mean postprandial
Data are derived from studies using test meals with 300–600 kcal. References are given in the text.
Lipase (U/min)10003000–60002000–4000
Amylase (U/min)50–250500–1000500
Trypsin (U/min)50–100200–1000150–500