Back to Ask the Diabetes Team Ask the Diabetes Team

From London, England:

I have had well controlled type 1 diabetes for 25 years, and even though my three year old son is showing none of the classic symptoms of diabetes (except sometimes he is a little more thirsty than others), he has 3+ glucose in his urine, but blood glucose monitoring levels are normal. What else could be the cause of glycosuria in such a young child if not diabetes? Can diabetes be present but not picked up yet? He. Urinalysis was done by myself and our general practitioner and blood tests done by hospital. We are going for further tests today as they think he may have some iron deficiency. Would this have any connection?


The so-called renal threshold is normally around 10 mmol/L [180 mg/dl] so there is no glucose in the urine unless the blood level has exceeded this threshold since the bladder was last emptied. The most common reason for glucose in the urine without a raised blood level is a low renal threshold which is usually entirely benign. There are a number of very rare conditions associated with leak of glucose into the urine, but these are associated with leak of other substances too, e.g., amino acids. These will be checked for.


Original posting 24 Dec 2002
Posted to Diagnosis and Symptoms


  Back to Ask the Diabetes Team Return to the Top of This Page

Last Updated: Tuesday April 06, 2010 15:09:42
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.

This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
By using this site, you agree to our Terms of Use, Legal Notice, and Privacy Policy.
© Children with Diabetes, Inc. 1995-2018. Comments and Feedback.