Cardiac Screening Tests for Dogs

Understanding the tests your vet or cardiologist uses to diagnose and monitor heart disease. Each guide covers what the test measures, what to expect, costs, and which breeds need it.

Echo

Echocardiogram (Echo)

An ultrasound of the heart that shows its size, shape, and how well it's pumping. The most important diagnostic tool for heart disease in dogs.

$300-600 for the exam, depending on location and whether it includes a Doppler study (most do). Follow-up echos may be slightly less expensive.

Holter

24-Hour Holter Monitor

A portable ECG device worn for 24 hours that records every heartbeat. Essential for detecting arrhythmias that may not appear during a brief vet visit.

$200-400 for the rental and interpretation. Some clinics charge separately for the interpretation by the cardiologist.

Chest X-ray

Chest X-Ray (Radiograph)

Shows the overall size and shape of the heart and whether there is fluid in or around the lungs. Often the first test done when heart disease is suspected.

$150-300 for 2-3 views. Often done as part of an initial cardiac workup or emergency evaluation.

Heart Listen

Cardiac Auscultation (Stethoscope Exam)

Your vet listens to your dog's heart with a stethoscope to detect murmurs, arrhythmias, and abnormal heart sounds. The simplest and most common cardiac screening tool.

Included in a regular veterinary exam ($50-100 for the visit). No additional charge for auscultation.

Taurine Test

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.

$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.

ECG

Electrocardiogram (ECG/EKG)

A brief recording of the heart's electrical activity. Shows heart rhythm and can detect arrhythmias, conduction abnormalities, and chamber enlargement patterns.

$50-150. Often included as part of a cardiology consultation or pre-anesthetic screening.