A 23-year-old man visits his physician with symptoms of abdo…
A 23-year-old man visits his physician with symptoms of abdominal discomfort and diarrhea. The man states that the diarrhea has been present off and on for approximately 6 weeks. He especially notes symptoms after a breakfast of wheat cereal and milk. His physician considers the possibility of two disorders, Celiac disease and lactose intolerance. What is one laboratory test that would diagnose Celiac disease? What is one laboratory test that would diagnose lactose intolerance?