Helicobacter pylori are a type of bacteria that lives in the digestive tract of the human body. Over a period of time, the cause the development of sores called ulcers in the lining of the stomach. The bacteria damage the lining of your stomach which shields your stomach from the acid used for digestion. Hence the acid attacks your stomach causing stomach ulcers causing bleeding and infections. Symptoms include a dull burning pain in the stomach especially when it is empty. Excessive burping, bloating of stomach, stomach pain, vomiting and blood in vomit, blood in stool, lack of hunger, and unexplained weight loss are other symptoms. ImG or Immunoglobin M is the largest and the first antibody that is released by the body in response to an infection. The test uses a blood sample to test the presence of these antibodies.