<Tr> <Th> MeSH </Th> <Td> D006029 </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> 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 . </P> <P> Alimentary glycosuria is a temporary condition, when a high amount of carbohydrate is taken, it is rapidly absorbed in some cases where a part of the stomach is surgically removed, the excessive glucose appears in urine producing glucosuria . </P>

Why should glucose not be present in urine