Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

My dog's blood test shows high neutrophils and left shift. What's wrong?

Updated on September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Male | neutered | 62 lbs

Rocco has a high level neutrophilia with left shift and monocytes. White blood cells are increased immature neutrophilia CBC slightly elevated. What tests are necessary and what do you believe is wrong

1 Answer

Most Helpful Answer

Tomasz Wnuk

Answered By Tomasz Wnuk

Veterinarian

Published on June 16th, 2020

Hello and thank you for contacting Petco Pet Education Center, formerly Petcoach. It sounds like infection. I would suggest 6-7 days of antibiotics treatment and then repeat the test. Alternatively, sending off blood for a smear evaluation will be a good option to differentiate infection from other (rare) causes of neutrophilia, like neoplasia and bone marrow diseases.
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Share

Styled arrow button