An association football (soccer) match is presided over by a referee, whom the Laws of the Game give full authority to enforce the Laws of the Game in connection with the match to which he has been appointed (Law 5). The referee is oftentimes assisted by two assistant referees, and sometimes by a fourth official.
Barfoed's test. Barfoed's test is a chemical test used for detecting the presence of monosaccharides. It is based on the reduction of copper(II) acetate to copper(I) oxide (Cu2O), which forms a brick-red precipitate.
Blood Tests. A renal function blood test is used to determine how well the kidneys are working. The blood is tested for the different waste products and minerals that the kidneys are supposed to be regulating.If the levels are too low or too high, a problem with renal functioning is indicated. renal function blood test is used to determine how well the kidneys are working. The blood is tested for the different waste products and minerals that the kidneys are supposed to be regulating.