GI Laboratory Tests

In this lesson, we will identify common types of lab tests used to diagnose disorders of the gastrointestinal, or GI, system.  We will discuss what each test measures along with nursing interventions for collection and transport of specimens. We will also establish normal values for each test and review what abnormal lab values may indicate in terms of gastrointestinal function.

Learning Objectives:

Upon the completion of this course, learners will be able to:

1. Identify 3 basic indications for GI lab tests
2. Describe a fecal occult blood test
3. Explain nursing interventions for a stool culture
4. List liver function tests
5. Determine nursing interventions for elevated ammonia levels
6. Identify methods to screen for H. pylori