What Do Pet Blood Tests Actually Look At?
A standard panel pairs a complete blood count — red cells, white cells, platelets — with a chemistry profile covering liver, kidney, glucose, protein, and electrolytes.
When a clinic says “we’ll run blood work,” it usually means two tests from one draw. The complete blood count (CBC) counts and sizes the blood cells themselves, hinting at anemia, infection, inflammation, and clotting capacity. The chemistry panel reads the plasma for what the organs are releasing into it.
Reading the panel like a dashboard
Kidney markers (BUN, creatinine, SDMA at some clinics), liver enzymes (ALT, ALP), glucose, total protein, and electrolytes each behave like a gauge — one abnormal needle rarely names a disease by itself, but the pattern across gauges narrows the search fast. Senior pets often add a thyroid level, and fasting may be requested for cleaner numbers.
Reference ranges are population averages, and a healthy individual can sit naturally near an edge — which is why results from the same animal over the years beat a single snapshot. Keep copies of each panel and have your veterinarian walk through the trend at the consult rather than reacting to one number.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.