cholecystokinin (CCK)/pancreozymin in plasma

Indications

• evaluation of pancreatic exocrine function
• CCK plasma levels may also be useful for evaluation of:
  • fatty food intolerance
  • gastric ulcer
  • post-gastrectomy states
  • irritable bowel syndrome

Reference interval

< 80 pg/mL

Increases

• clinical disorders
  • pancreatic exocrine disorders
  • celiac disease
  • levels up to 8500 pg/mL
• pharmaceutical agents
  • somatostatin completely inhibits secretion of CCK
• levels increase following ingestion of food
  • responses are more rapid in patients with duodenal ulcers & diabetes mellitus than healthy subjects

Specimen

• plasma, fasting
• collect blood in special tube containing heparin & Trasylol
• separate plasma in a refrigerated centrifuge within 30 minutes of collection
• freeze immediately after separation of plasma

More general terms

• special chemistry test

Additional terms

• cholecystokinin-pancreozymin (CCK)