Digestive issues are quite common, affecting up to 70 million people in the United States. In fact, a survey found that 40% of Americans experience digestive issues that disrupt their daily lives. Chronic diarrhea, abdominal cramping, food intolerances, malabsorption, small intestinal bacterial overgrowth (SIBO), and abnormal weight loss or gain can frequently be evaluated with lab testing. Evaluation for malabsorption of vitamin D, B12 and other nutrients can help with recovery. Helping to differentiate between Crohn’s disease and ulcerative colitis and other inflammatory bowel diseases can be helpful via lab testing in conjunction provider.