1.4 Chemical Determination. Proteins are complex, organic compounds composed of many amino acids linked together through peptide bonds and cross-linked between chains by sulfhydryl bonds, hydrogen bonds and van der Waals forces.
Common causes of pleurisy include trauma, postcardiac injury, infection (i.e., viral, bacterial, or parasitic), respiratory illness, caustic exposure (i.e., drug-induced), autoimmune disease, and malignancy (TABLE 1).
Pleural fluid analysis is also known as thoracentesis. Itâs a procedure used to drain excess fluid from the space outside of the lungs but inside the chest cavity. Normally, this area contains about 20 milliliters of clear or yellow fluid. If thereâs excess fluid in this area, it can cause symptoms such as shortness of breath and coughing.