The evaluation of malabsorption begins with a history and physical exam.

The physical examination in someone with malabsorption is usually normal.

Testing may be necessary to exclude conditions that may cause symptoms similar to malabsorption.

Tests that may be used to evaluate malabsorption include:

• Complete blood count
• Kidney profile
• Stool cultures
• Stool guaiac:
• Stool testing for minute quantities of blood
• Stool tests to measure fats and proteins in the stool
• Sweat chloride test:
• Used to screen for cystic fibrosis

Imaging tests that may be used to evaluate malabsorption include

• Abdominal ultrasound
• CT scanning of the abdomen
• Virtual colonoscopy
• Barium enema
• Lower GI endoscopy (colonoscopy)
• Upper GI series
• Upper GI endoscopy