Biochemical evaluation can be done using either plasma or serum samples. Plasma is preferred because it allows the blood to be separated immediately, which minimizes duration of cell exposure.

Parents are not given the option to opt out of the procedure before it happens, they say. Michigan officials claim that blood samples are kept separate from children's personal data. But the parents ...

Blood sample tubes that contain a separating gel are often used to obtain blood serum for laboratory tests. After centrifugation, the inert acrylic gel at the bottom of the tube normally occupies ...

Blood samples in the snake can be collected from ... of contractions keep the oxygenated blood and deoxygenated blood separate within the ventricle. The right atrium receives the deoxygenated ...