As a matter of fact, these test tubes are characterized by such features that make them extremely easy to use: for example, the presence of an arrow to indicate the blood level, the convenience in ...

measures how quickly red blood cells sink to the bottom of a test tube. A high rate of settlement indicates high levels of inflammation. Rather than help diagnose a specific condition, an ESR test ...

Don’t let all those “ph-ph” words confuse you. Once your blood is collected in a tube for a phosphate test, it's sent to a lab for testing. (Photo Credit: iStock/Getty Images) Since ...