By Dr Ananya Mandal, MD. Life expectancy refers to the number of years a person is expected to live based on the statistical average. Life expectancy varies by geographical area and by era. In the Bronze age, for example, life expectancy was 26 years, while in 2010, it was 67 years.In mathematical terms, life expectancy refers to the expected number of years remaining for an individual at any given age.ife expectancy varies by geographical area and by era. In the Bronze age, for example, life expectancy was 26 years, while in 2010, it was 67 years. In mathematical terms, life expectancy refers to the expected number of years remaining for an individual at any given age.
What It Is. A stool (feces) sample can provide doctors with valuable information about what's going on when a child has a problem in the stomach, intestines, or other part of the gastrointestinal (GI) system. A stool culture helps the doctor determine if there's a bacterial infection in the intestines.A technician places small stool samples in sterile plastic dishes containing nutrients that encourage the growth of certain bacteria.hat It Is. A stool (feces) sample can provide doctors with valuable information about what's going on when a child has a problem in the stomach, intestines, or other part of the gastrointestinal (GI) system. A stool culture helps the doctor determine if there's a bacterial infection in the intestines.
Results. Helicobacter pylori tests are used to detect a Helicobacter pylori (H. pylori) infection in the stomach and upper part of the small intestine (duodenum). Results from the urea breath test or a stool antigen test are usually available within a few hours. A urea breath test checks to see if you have H. pylori bacteria in your stomach. 2  This test can show if you have an H. pylori infection. 3  It can also be used to see if treatment has worked to get rid of H. pylori. 4  Stool antigen test.