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My dog's low glucose pre-dental bloodwork: Is it a false reading?

Updated on September 23rd, 2025

Pet's info: Dog | Silky Terrier | Male | neutered | 8 years and 10 months old | 15 lbs

My dog had preop bloodwork done 2 days ago for a dental cleaning he may need and the results came back today. Vet said his glucose level came back low but she is almost certain it's a false reading. It was <10 and she said he would be collapsing if that were true? His other values are normal and mostly within range, and he seems normal otherwise. I tend to over worry, so should i have then perform another glucose test to be sure? Vet didn't seem too concern and siad it was ok to schedule dental.

1 Answer

Most Helpful Answer

Andrea M. Brodie, DVM

Answered By Andrea M. Brodie, DVM

Veterinarian

Published on July 24th, 2018

If Oscar really had a blood glucose of <10 he likely would be dead.
So, just as your vet said, it is a false reading. Sometimes if the blood is left standing a little too long the blood cells use up all the glucose and then the reading is too low. Nothing to worry about.
Oscar should drink a little more water, he appears a little dehydrated.
Some of the values are high due to bad gingivitis or bad teeth (MCHC indicates inflammation)
All is well and his dental can definitely be scheduled. He does not need another glucose test.
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