Clinical Chemistry   (in   English   :   Clinical chemistry   full) (also known by other names such as:   Clinical Biochemistry   clinical biochemistry, or the   science of chemical diseases   , chemical pathology, or   chemistry biomedical   medical biochemistry or  pure blood chemistry   pure blood chemistry), one of the branches   of pathology   who is interested in General analysis   of body fluids This specialization originated in the late nineteenth century and was used in simple chemical tests that were performed on a group of blood and urine synthesis compounds     
Later in the application of other techniques, including the use of measuring the activity of  enzymes ,  and optical spectroscopy   spectrophotometry,   electrical and Rahlan  electrophoresis   and immunological calibration  immunoassay

Most of the existing laboratories are highly developed, in which tests are used that closely monitor and control high-quality systems

All biochemical tests come within chemical pathology. These tests can be applied to any type of   body fluids   , but most are applied to   serum or plasma   . Serum is the watery yellow part of the blood that comes out when the blood clots and all of its cells are removed. This process is easily carried out by centrifugation, which mobilizes condensed blood cells and platelets and transports them to the bottom of the centrifuge tube, leaving the liquid-serum-part excreted from the top of those congested cells. As for the plasma, it is basically similar to serum, but it can be obtained by performing a centrifugation process on the blood   without the   need for clotting. Thus, the plasma contains all coagulation factors, including   fibrinogen