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Trypsin and Chymotrypsin

Formal name: Stool trypsin and chymotrypsin

Related tests: Trypsinogen (IRT), Fecal fat, CF gene mutation, Sweat chloride

Common Questions

What other tests might my doctor do to check for cystic fibrosis?
What other laboratory tests may be done if I or my child has a negative trypsin test?

1. What other tests might my doctor do to check for cystic fibrosis?

Your doctor may order newborn immunoreactive trypsinogen testing (IRT), sweat chloride testing, and/or CF gene mutation testing.

2. What other laboratory tests may be done if I or my child has a negative trypsin test?

Your doctor may order a stool test for fecal fat or a blood test for amylase or lipase to look at other aspects of pancreas and digestive function.

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This article was last reviewed on January 23, 2009. | This page was last modified on November 6, 2009.

The review date indicates when the article was last reviewed from beginning to end to ensure that it reflects the most current science. A review may not require any modifications to the article, so the two dates may not always agree.

The modified date indicates that one or more changes were made to the page. Such changes may or may not result from a full review of the page, so the two dates may not always agree.

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