Renal glycosuria, also known as
renal glucosuria, is a rare condition in which the simple
sugar glucose is excreted in the urine despite normal or low blood glucose levels. With normal kidney (renal) function, glucose is excreted in the urine only when there are abnormally elevated levels of glucose in the blood. However, in those with renal glycosuria, glucose is abnormally elevated in the urine due to improper functioning of the renal tubules, which are primary components of
nephrons, the
filtering units of the kidneys.