Why Is My Dog Or Cat’s Blood Hemoglobin Level Low Or High?

Ron Hines DVM PhD

To see what normal blood and urine values are, go here

For an explanation of causes of most abnormal blood and urine tests, go here

To see how tests are grouped, go here 

The Level Of Hemoglobin In Your Pet’s Blood = Hg = Hgb

Hemoglobin is the iron-containing reddish molecule within your pet’s red blood cells that is responsible for carrying oxygen.

Reasons Why Your Pet’s Hemoglobin Level Might Be Low:

For all the same reasons that your pet’s PCV might be low. It is also possible for red blood cells to carry less than their normal amount of hemoglobin. That is reflected in a blood tests that measure average red blood cell hemoglobin concentration (MCHC).

Reasons Why Your Pet’s Hemoglobin Levels Might Be High:

For all the same reasons that your pet’s PCV might be high.

Sluggish blood flow throughout the body – as occurs in advance heart disease can also raise hemoglobin levels.

Heinz bodies, fatty blood samples (lipemia) and other blood turbidity problems (cloudiness) can cause blood hemoglobin levels to be falsely measured as high.

If your dog is a sight hound, such as a greyhound, its hemoglobin levels will normally be high (ref) .

Complementary Tests:

The same ones as for anemia, hematocrit, PCV, MCHC , MCV , poikilocytosis, reticulocyte count and other erythrocyte indices


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