Low Albumin in Dogs: What Causes It and What Vets Test

Albumin is an important blood protein that helps maintain normal fluid distribution. If a blood test shows low albumin, the priority is finding why the level is low. A dog may lose protein through the kidneys or intestines, produce too little because of liver disease, or have other systemic illness.

What tests may follow

Your veterinarian will interpret the result alongside the complete blood count, chemistry profile and clinical signs. Urinalysis and a urine protein-to-creatinine ratio may help assess renal protein loss. Digestive symptoms, weight loss or abnormal liver measurements can point toward other investigations.

What signs should concern owners?

Fluid can accumulate in the abdomen or limbs when albumin is very low, although swelling has other causes too. Persistent vomiting, diarrhea, loss of weight, reduced appetite and weakness warrant timely evaluation. Labored breathing, collapse or rapidly increasing abdominal swelling requires emergency care.

Why a high-protein home recipe is not a treatment

Simply adding protein or supplements may not correct ongoing protein loss or liver dysfunction. A dog with kidney disease may require a different diet from one with intestinal disease. Treatment often needs management of the cause and careful monitoring of albumin and other values.

Questions to ask

How low is the result? Was it confirmed? Are proteins leaking into urine? Are there signs of intestinal or liver disease? What should be checked again and how soon? Do not start human diuretics or “albumin boosting” supplements on your own.

Read Merck Veterinary Manual: Glomerular Disease for an explanation of one protein-loss pathway.

Informational only; a veterinarian must interpret abnormal laboratory results.

This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.

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