What Are the Symptoms of Glycosuria?

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  • Written By: Mary McMahon
  • Edited By: Shereen Skola
  • Last Modified Date: 15 October 2016
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Symptoms of glycosuria, where urine contains glucose, can vary depending on the cause; this might include diabetes, infection, pregnancy, or a rare disorder called renal glycosuria. Some patients may be asymptomatic, in which case the issue is identified during routine urinalysis or medical workup. Others might have problems like abdominal pain, thirst, or high blood sugar. Determining the cause is important for the medical provider, who needs to develop a treatment plan based on why the patient’s kidneys can’t filter glucose appropriately.

In most healthy individuals, the kidneys retain glucose because it is useful for a variety of metabolic functions. When kidney function declines or the blood is overloaded with glucose, the kidneys may start secreting it in the urine. Historically, this could be detected by tasting the urine and checking for a distinctive sweet scent. Modern-day medical practitioners have a less unpleasant way of testing, using a simple dipstick in a urine sample to check for glucose.

One potential reason to have glycosuria is a benign condition known as renal glycosuria, in which case the patient may have no symptoms. A doctor may ask for some additional tests to confirm the cause. Pregnant women can also pass some glucose in their urine without it being a symptom of medical problems; this, however, can also be a warning sign of gestational diabetes, so it requires some follow-up testing.


In patients with diabetes, the most common cause of glycosuria, symptoms can include frequent urination, excessive thirst, and dehydration. These patients are passing large volumes of water along with the glucose, which leaves them feeling dehydrated. Diabetic patients will also have high blood sugar, which can be determined with a quick finger stick test or more extensive blood chemistry testing. A full blood panel may be recommended to check on other health indicators, which can be helpful in the workup of a patient presenting with a new case of diabetes or seeking treatment for poorly controlled diabetes.

Kidney disorders including infections can sometimes cause this condition. These conditions may cause symptoms like pain in the kidney area, difficulty urinating, and fever. Testing of the urine may show large numbers of white blood cells, proteins, and other indicators that will help a medical provider determine the nature of the problem. If a patient has high levels of white blood cells and abdominal pain, for example, the likely cause is a kidney infection that is interfering with kidney function.


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Post 4

I went to the gp today for left abdominal pain and back pain and took a urine sample and was told I have got a lot of glucose in the urine. Is this cause to worry?

Post 3

I had glucose in my urine during my first pregnancy. The doctor thought I had gestational diabetes and had me get testing done for it. But the tests showed that I didn't have diabetes. I don't think I had any symptoms. I gained a lot of weight during my first pregnancy but I have no idea if that has anything to do with it. I had a very healthy baby and healthy pregnancy otherwise.

I guess it's normal to get small amounts of glucose in the urine during pregnancy. My doctor couldn't explain to me why it happens but since all my tests came back fine, I decided not to worry about it.

Post 2

@burcidi-- Yea, I guess that's why it's hard to know whether someone has glycosuria from symptoms, a urine test is the only definite way of knowing.

Also, I think that glycosuria in diabetics happens when blood glucose levels are really high. So most diabetics who are on medications or insulin will not have glycosuria because their diabetes is under control. If they do have glycosuria, either their sugar is out of control, or they have a problem with their kidneys.

Post 1
Type 2 diabetes runs in my family, but most of us don't have glycosuria even though we carry many of the symptoms. I also have type 2 diabetes and I do have excessive thirst, urination and my blood glucose comes out too high in a glucose tolerance test. I also get a routine urine test but tests have never shown glucose in my urine.

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