Clinical chemistry the denser blood cells and platelets to the bottom of the centrifuge tube, leaving the liquid serum fraction resting above the packed cells. This initial step before analysis has recently been included in instruments that operate on the "integrated system" principle. Plasma is in essence the same as serum, but is obtained by centrifuging the blood "without" clotting. Plasma is obtained by centrifugation "before" clotting occurs. The type of test required dictates what type of sample is used. A large medical laboratory will accept samples for up to about 700 different kinds of tests. Even the largest of laboratories rarely
Blood, Sweat & Tears 3 Blood, Sweat & Tears 3 Blood, Sweat & Tears 3 is the third album by the band Blood, Sweat & Tears, released in 1970. After the huge success of their previous album, "Blood, Sweat & Tears 3" was highly anticipated and it rose quickly to the top of the US album chart. It also yielded two hit singles: a cover of Carole King's "Hi-De-Ho", and "Lucretia MacEvil." However, the album relied heavily on cover material and it received lukewarm reviews (this may also have been influenced by the band's participation in an unpopular U.S. government-sponsored tour of Eastern Europe). In