My active dog's blood test results are abnormal. Should I worry?

Most of the parameters that are reading outside the normal range on this lab work are not likely to be significant and I can list what is abnormal and tell you what that could mean:
1. Slightly elevated leukocytes (white blood cells): while this can be a sign of infection or inflammation a slight elevation is more commonly seen with mild stress and may not be significant
2. Mild elevation in PCV (packed cell volume or red blood cells): this can be seen with dehydration or in very rare cases bone marrow disease; it is also common for some dogs to run slightly high for no significant reason
3. Elevated MCHC (mean cell hemoglobin concentration) only significant if the red blood cell level is low
4. Elevated ALP (alkaline phosphatase, a liver enzyme): can increase with liver or gallbladder disease, increases in cortisol, or bone lesions, but more commonly will be non-specific finding
5. Mildly elevated total bilirubin: can increase with gallbladder disease or anemia, but more likely to be a non-specific finding and potentially due to changes with the blood sample itself
6. Low BUN (blood urea nitrogen): can decrease with severe liver failure but there are not changes consistent with liver failure on blood work so it is a non-specific change

With all laboratory values there is a general range that is considered 'normal' but there is always a certain percentage of dogs that will be normal and still fall outside this range. I would of course defer to your veterinarian's interpretation of the lab work since they know Bruno's history and physical exam findings which might change the interpretation.