Blood Taurine Level Test
A blood test measuring whole blood taurine levels to check for deficiency. Important for breeds prone to taurine-deficiency DCM and dogs on grain-free diets.
What it measures
Whole blood taurine concentration, measured in nmol/mL. Normal range is typically above 250 nmol/mL. Deficiency is defined as below 200-250 nmol/mL depending on the lab. Plasma taurine can also be measured but whole blood is more accurate for assessing long-term taurine status.
What to expect
A simple blood draw from your dog's leg vein, identical to routine bloodwork. The sample is sent to a reference laboratory (UC Davis VGL is the most commonly used). Results typically take 5-10 business days. No fasting required. Your dog can eat and drink normally before the test.
Typical cost
$50-150 for the test itself, plus the cost of the blood draw and vet visit. Some labs charge separately for whole blood vs plasma taurine.
How often
When DCM is diagnosed in at-risk breeds (Golden Retriever, Cocker Spaniel, Newfoundland, Labrador). When feeding grain-free, legume-rich, or exotic protein diets. Follow-up: 3-6 months after starting taurine supplementation to confirm levels are improving.
Conditions detected
Breeds that need this test
In-depth guide
Read our complete guide to blood taurine level testfor dogs →
Need to schedule a taurine test?
Find a board-certified veterinary cardiologist near you who can perform this test and interpret the results.
Find a cardiologist →Medical disclaimer: Heart Dog Club provides educational information only and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian or board-certified veterinary cardiologist (DACVIM-Cardiology) regarding your dog's health.