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.
Currently, point-of-care tests, such as those that may be used at a doctor's office or a patient's bedside, are not accurate enough for use in diagnosis but can be used to monitor treatment (lifestyle and drug therapies). Monitoring. The A1c test is also used to monitor the glucose control of diabetics over time.The goal of those with diabetes is to keep their blood glucose levels as close to normal as possible.urrently, point-of-care tests, such as those that may be used at a doctor's office or a patient's bedside, are not accurate enough for use in diagnosis but can be used to monitor treatment (lifestyle and drug therapies). Monitoring. The A1c test is also used to monitor the glucose control of diabetics over time.