Why It Is Done. An aldosterone test is done to: 1  Measure the amount of aldosterone released into the body by the adrenal glands. 2  Check for a tumor in the adrenal glands. 3  Find the cause of high blood pressure or low blood potassium levels.igh levels of both renin and aldosterone are normally present when the body is trying to conserve fluid and salt (sodium). When a tumor that makes aldosterone is present, your aldosterone level will be high while a renin level will be low.
The rice purity test is a national phenomenon that has taken the world by storm over the last several years. It is defined by Wikipedia: as a self graded survey that assesses the participants supposed degree of innocence in worldly matters (sex, drugs, deceit and other activities assumed to be vices).
DNA concentration can be determined measuring the intensity of absorbance of the solution at the 600 nm with a spectrophotometer and comparing to a standard curve of known DNA concentrations. Measuring the intensity of absorbance of the DNA solution at wavelengths 260 nm and 280 nm is used as a measure of DNA purity. DNA purification from detergents, proteins, salts and reagents used during cell lysis step. 2  The most commonly used procedures are: 3  Ethanol precipitation usually by ice-cold ethanol or isopropanol. 4  Since DNA is insoluble in these alcohols, it will aggregate together, giving a pellet upon centrifugation.