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.
Testing is the only way to know how your kidneys are doing. It is important for you to get checked for kidney disease if you have the key risk factors â diabetes, high blood pressure, heart disease, or a family history of kidney failure. Two tests are needed to check for kidney disease. 1. A blood test checks your GFR, which tells how well your kidneys are filtering. GFR stands for glomerular (glow-MAIR-you-lure) filtration rate. 2. A urine test checks for albumin in your urine. Albumin is a protein that can pass into the urine when the kidneys are damaged. It is also important to have your blood pressure checked. High blood pressure can be a sign of kidney disease. Keep your blood pressure at or below the target set by your health care provider.