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Should I worry about my cat's RDW of 30.7 before neuter surgery?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 6 months and 4 days old | 7 lbs

My cat's pre anesthesia bloodwork before his neuter came back at 122 today. His RDW was 30.7. All other levels were fine. They told me bloodwork looked good and surgery went well. However, I have severe anxiety and am panicking reading the lab report just now.

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on June 8th, 2023

Hello, thank you for using Petco Pet Education Center, formerly Petcoach. I can assure you, if there was any question that the blood tests were not good your vet would not have proceeded with the surgery. The RDW is the distribution of the red blood cells. Remember, not every individual will fall exactly within the reference range. Those are averages and there will always be outliers. A higher RDW is not uncommon in young animals. The reference range most vets use has the high end of normal as 31% so I wouldn't be worried at all about 30.7%. The things we really look at for pre-anesthesia are kidney and liver values as those two organs are used by the body to remove anesthetics. If those have any abnormalities we would not want to anesthetize him. It sounds like Littlefoot's was normal. I don't think you have anything to be concerned about. Hope this helps. Best wishes.

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