Young Americans continue to be the most likely to use social networks, according to the survey, with 90 percent of those 18 to 29 reporting that they use at least one social site. However, growth in usage by young adults started tapering off in 2010, while use by older people has surged.
A carbon monoxide blood test is used to detect poisoning from breathing carbon monoxide. You might have this test if you have been exposed to the gas or if you have unexplained symptoms, such as: 1  Headache, dizziness, or vision problems.  Nausea or vomiting.
Most of the carbon dioxide in your body is in the form of bicarbonate. This is made by your kidneys. Bicarbonate is used to keep the acids and bases in your blood in balance. The test measures all types of carbon dioxide in your blood: bicarbonate, carbonic acid, and dissolved CO2.