What is "glycosuria"

Glycosuria \Gly`co*su"ri*a\, n. (Med.) Same as Glucosuria.

n. (context medicine English) The presence of sugars (especially glucose) in the blood, often as a result of diabetes mellitus

n. the presence of abnormally high levels of sugar in the urine

Glycosuria or glucosuria is the excretion of glucose into the urine. Ordinarily, urine contains no glucose because the kidneys are able to reabsorb all of the filtered glucose from the tubular fluid back into the bloodstream. Glycosuria is nearly always caused by elevated blood glucose levels, most commonly due to untreated diabetes mellitus. Rarely, glycosuria is due to an intrinsic problem with glucose reabsorption within the kidneys (such as Fanconi syndrome), producing a condition termed renal glycosuria. Glycosuria leads to excessive water loss into the urine with resultant dehydration, a process called osmotic diuresis.