Biologists use them to culture and handle various organisms, fluids, and samples. Some test tubes, such as those used in coagulation screens, contain prepared contents. In hospitals, labs, and other ...

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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 ...

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GPs are having to make difficult choices about which patients get blood tests because of the ongoing shortage of test tubes, doctors are warning. The vials used for blood tests are currently in ...