Secretin stimulation test

How the test is performed:

A tube is passed through the nose into the stomach then into the duodenum. Secretin is administered and the contents of the duodenal secretions are aspirated and analyzed over a period of about 2 hours.

How to prepare for the test:

Fast for 12 hours prior to the test.

Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:

• infant test or procedure preparation (birth to 1 year)
• toddler test or procedure preparation (1 to 3 years)
• preschooler test or procedure preparation (3 to 6 years)
• schoolage test or procedure preparation (6 to 12 years)
• adolescent test or procedure preparation (12 to 18 years)

How the test will feel:

The tube may produce gagging during placement.

Why the test is performed:

People with cystic fibrosis form mucous plugs that can obstruct the pancreatic ducts that empty into the small intestines. These plugs prevent neutralization of the food acidity, which ultimately reduces the ability to digest and absorb foods.