A test to see if sugar is present in the urine [Described 1915. After Stanley Rossiter Benedict (1884—1936), physiological chemist at Cornell University, New York, USA.]
A test for the presence of sugar in urine or other liquids. A few drops of the test solution are added to Benedict’s solution, prepared from sodium or potassium citrate, sodium carbonate, and copper sulfate. The mixture is boiled and shaken for about two minutes, then left to cool. The presence of up to 2% glucose is indicated by the formation of a reddish, yellowish, or greenish precipitate, the highest levels corresponding to the red coloration, the lowest (about 0.05%) to the green.
A urine test to detect the presence of sugar. In this test, Benedict’s solution and a urine sample are separately heated in test tubes and then mixed together. If sugar is present in the urine, the resulting solution turns a vivid orange color.