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My dog's urine has sugar, but blood sugar is normal. Is it Fanconi?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Male | neutered | 10 years and 8 months old | 9 lbs

Is this indicative of Fanconi Syndrome if no glucose is in the blood just the urine?

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1 Answer

Most Helpful Answer

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Answered By Ana M, DVM

Veterinarian

Published on September 9th, 2018

Thank you for submitting your question regarding Toby. Fanconi syndrome is most common in young to middle aged Basenji dogs. The dogs drink and urinate excessively. The blood sugar is normal, while the sugar in the urine is increased. This is a rare condition. Diabetes mellitus is much more common especially for a dog of Toby's age and breed. This is indicated by high blood sugar and high sugar in the urine. If his blood sugar was normal, then I would recommend a fructosamine level. This will give you an average reading of his blood sugar levels over the past two to three weeks. I hope this information helps!

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