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My dog has diabetes. Blood sugar 204 after food. Should I give insulin?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 11 years and 2 months old | 29 lbs

My dog Mechas is 11 years old and it was diagnosed with diabetes last week. This morning his blood sugar was 89. I didn’t give insulin, after he eat I rechecked his blood sugar and it was 204. Should I give him the insulin?

2 Answers

Most Helpful Answer

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Answered By Debi Matlack

Veterinary Technician

Published on May 9th, 2021

Yes, he should get some insulin now. The usual starting dose is about ¼ unit per pound of body weight. Thus, a 20 lb. dog would start at 5 units; 40 lb. at 10 units, and so on. So at 29 pounds, he should get about 7 units of insulin. Check his glucose again in a few hours and see where he is to make sure he's not getting too low. If he does get really low, you can help bring it back up by giving some honey or Karo syrup.

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1Pet Parents found this answer helpful

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    Answered By Joy Fuhrman, DVM, MBA, CPA

    Veterinarian

    Published on December 16th, 2017

    A normal blood glucose for a dog is close to 100. A fasting blood glucose of 30.2 is very low. I would recommend you consult with your veterinarian about an appropriate insulin dose after a full chemistry panel is completed.

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