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.
Tests and procedures used to determine whether you have an H. pylori infection include: 1  Blood test. 2  Analysis of a blood sample may reveal evidence of an active or previous H. pylori infection in your body. 3  However, breath and stool tests are better at detecting active H. pylori infections than is a blood test. Analysis of a blood sample may reveal evidence of an active or previous H. pylori infection in your body. 2  However, breath and stool tests are better at detecting active H. pylori infections than is a blood test.