What health condition is typically screened during a routine blood test in dogs?

A routine blood test in dogs is designed to assess various aspects of a dog's health, providing critical information about their overall well-being. Screening for conditions such as diabetes, heartworm disease, and kidney function is common during these tests, as they can help detect underlying health issues before they become more serious.

Diabetes is typically screened through blood glucose levels, where elevated glucose can indicate the presence of this metabolic disorder. Heartworm disease is often evaluated using specific blood tests that detect antigens produced by adult female heartworms; timely diagnosis is crucial for effective treatment. Kidney function is assessed through various parameters, including blood urea nitrogen (BUN) and creatinine levels, which can indicate how well the kidneys are filtering waste from the bloodstream.

Therefore, the comprehensive nature of routine blood tests makes it standard practice to screen for a range of health conditions, including all those listed. This holistic approach ensures that veterinarians can monitor and address potential health issues promptly, which is why the correct answer encompasses all of the specified conditions.