Template:Infobox symptom Glycosuria or glucosuria is the excretion of glucose into the urine. Ordinarily, urine contains no glucose because the kidneys are able to reclaim all of the filtered glucose 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 themselves, a condition termed renal glycosuria. Glycosuria leads to excessive water loss into the urine with resultant dehydration, a process called osmotic diuresis.
Blood is filtered by millions of nephrons, the functional units that comprise the kidneys. In each nephron, blood flows from the arteriole into the glomerulus, a tuft of leaky capillaries. The Bowman's capsule surrounds each glomerulus, and collects the filtrate that the glomerulus forms. The filtrate contains waste products (e.g. urea), electrolytes (e.g. sodium, potassium, chloride), amino acids, and glucose. The filtrate passes into the renal tubules of the kidney. In the first part of the renal tubule, the proximal tubule, glucose is reabsorbed from the filtrate, across the tubular epithelium and into the bloodstream. The proximal tubule can only reabsorb a limited amount of glucose. When the blood glucose level exceeds about 160 – 180 mg/dl, the proximal tubule becomes overwhelmed and begins to excrete glucose in the urine.
|trace||100 mg/dL |
If the RTG is so low that even normal blood glucose levels produce the condition, it is referred to as renal glycosuria.
Glucose in urine can be identified by Benedict's qualitative test.
A urine dipstick can show a false-positive glucosuria if someone is taking Pyridium or AZO Standard, medications that relieve symptoms of urinary tract infection.
Support our sponsors
W8MD weight loss, sleep and medspa centers sponsors WikiMD.
W8MD's Locations for losing weight, sleeping better and looking your best
King of Prussia
Other W8MD blogs
2632 E 21st Street Ste L2 Brooklyn New York 11235.
W8MD weight loss now in Manhattan, New York City
W8MD's insurance weight loss program
W8MD can help?
Dr Tumpati is a board certified physician with significant practice experience in managing sleep disorders, internal medicine, aesthetic and obesity medicine. As one of the few physicians that have the privilege of a fellowship training in Obesity Medicine, Dr Tumpati is very passionate about educating the public and physicians about how some of the nutritional concepts were misunderstood. As the founder of W8MD Weight Loss, Sleep and MedSpa centers, Dr Tumpati is the medical director for the New York, New Jersey and Pennsylvania locations and commutes weekly between the locations.
Places for Glycosuria
- W8MD’s insurance weight loss programs one of the best ways to lose weight fast in NYC, King Of Prussia, Philadelphia, New Jersey and other places.