Endpoint
Plasma cholecystokinin
A peptide, of about 33 amino acids, secreted by the upper intestinal mucosa and also found in the central nervous system. It causes gallbladder contraction, release of pancreatic exocrine (or digestive) enzymes, and affects other gastrointestinal functions. Cholecystokinin may be the mediator of satiety.
CAT:outcome/plasma-cholecystokininreported in pmol/L
How it is measured
Plasma cholecystokinin concentration by immunoassay or radioimmunoassay, sampled after a fixed mixed-nutrient drink or during intraduodenal nutrient infusion.