What is sugar in urine?

Sugar (glucose) is usually present in the urine at very low levels or not at all. Abnormally high amounts of sugar in the urine, known as glycosuria, are usually the result of high blood sugar levels. High blood sugar usually occurs in diabetes, especially when untreated.

Normally, when blood is filtered in the kidneys, some sugar remains in the fluid that will later become urine. If the level of blood sugar is low, as is normally the case, the body can reabsorb the sugar from this fluid before it leaves the kidney to be excreted as urine. When the blood sugar is high, there is too much sugar in the fluid leaving the kidney to be reabsorbed, so some sugar passes into the urine.

Sugar in the urine can be detected in the laboratory or is easy to detect at home with a urine dipstick test. Because sugar in the urine is associated with high blood sugar and diabetes, it is important to consult a physician if you suspect you have sugar in your urine. Sugar in the urine is often accompanied by other symptoms of diabetes, including fatigue, unexplained weight loss, excessive thirst or hunger, and frequent urination.

Seek immediate medical care (call 911) if you have sugar in the urine along with more serious symptoms, including the inability to think clearly.

Seek prompt medical care

if your sugar in the urine is persistent or causes you concern.

SYMPTOMS

What other symptoms might occur with sugar in urine?

Sugar in the urine may occur with a variety of other symptoms, most commonly those associated with diabetes.

Symptoms that might indicate a serious condition

In some cases, sugar in the urine may occur with other symptoms that might indicate a serious condition that should be evaluated immediately in an emergency setting. Seek immediate medical care (call 911) <... Read more about sugar in urinesymptoms

CAUSES

What causes sugar in urine?

Sugar in the urine is usually caused by prediabetes or diabetes, which results in high blood sugar levels, especially when untreated.

Common causes of sugar in the urine

Sugar in the urine may be caused by several common conditions including:

Medical Reviewer: Cynthia Haines, MD Last Annual Review Date: Aug 8, 2013 Copyright: © Copyright 2014 Health Grades, Inc. All rights reserved. May not be reproduced or reprinted without permission from Health Grades, Inc. Use of this information is governed by the HealthGrades User Agreement.

This Article is Filed Under: Kidneys and the Urinary System


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