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My cat was just diagnosed with diabetes. Is insulin needed right away?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Female | spayed | 9 years and 2 months old | 13.86 lbs

10 yr cat diag. diabetes yesterday. Have blood results, ProCyte Dx: HIGH - HCT 53.4% 30.3-52.3 ,LOW - PLT 83 K/uL 151-600, UA Analyzer: GLU - 56 mmol/L, Catalyst Dx: HIGH - GLU 23.81 mmol/L 3.95 - 8.84. Cat is very lethargic and has reddish eyes. I was sent home with no insulin told that "they would get me back in to show it all to me and talk about prices". I will get her off kibble and on high protein quality canned food. Dieting, steady.Do I need insulin right away? Anything else you think?

1 Answer

Most Helpful Answer

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Answered By Vanessa Yeager DVM MPH

Veterinarian

Published on July 26th, 2018

Hi there and thanks for posting on Petco Pet Education Center, formerly Petcoach! If glucose was high on blood work and glucose is also present in the urine, then this is a diagnosis of diabetes. Insulin should begin as soon as possible when a diabetic is first diagnosed. Unless the patient is really ill or unstable, one or two day delay for insulin should be okay. A 12 hour glucose curve at the hospital should be run with the insulin Bella will be on for her first day of insulin treatment so the proper dose can be calculated and to make sure Bella does not have any negative reactions to the insulin or become hypoglycemic at any point. I hope this helps!

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