### Human:\nif you have had most of large intestine removed could you develop a vitamin definciency? how would that be detected?\n\n### Assistant: even though the small intestine eventually adapts to the loss of the large intestine it is possible to have a nutrient deficiency or become dehydrated. it's a good idea to take a multivitamin drink adequate fluids and get blood work done per your gastro-intestinal (gi) doctor's recommendation. common nutrient (vitamin and minerals) deficiencies they would check for through blood tests include iron (anemia) b vitamins like b12 and vitamin d. be sure to check with your doctor on the type of tests you need.